/*
** 3up2down
**
** Common Javascript functions and tools
**
** Dan Mitchell
** Creative Edge
*/


// ----------
// SNIFFER
// Sniffer based on http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html

		// convert all characters to lowercase to simplify testing
		var agt=navigator.userAgent.toLowerCase();
	
		// *** BROWSER VERSION ***
		// Note: On IE5, these return 4, so use is_ie5up to detect IE5.
		var is_major = parseInt(navigator.appVersion);
		var is_minor = parseFloat(navigator.appVersion);
	
		// Note: Opera and WebTV spoof Navigator.  We do strict client detection.
		// If you want to allow spoofing, take out the tests for opera and webtv.
		var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
					&& (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
					&& (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
		var is_nav2 = (is_nav && (is_major == 2));
		var is_nav3 = (is_nav && (is_major == 3));
		var is_nav4 = (is_nav && (is_major == 4));
		var is_nav4up = (is_nav && (is_major >= 4));
		var is_navonly      = (is_nav && ((agt.indexOf(";nav") != -1) ||
							  (agt.indexOf("; nav") != -1)) );
		var is_nav6 = (is_nav && (is_major == 5));
		var is_nav6up = (is_nav && (is_major >= 5));
		var is_gecko = (agt.indexOf('gecko') != -1);
	
	
		var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
		var is_ie3    = (is_ie && (is_major < 4));
		var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie 4")!=-1) );
		var is_ie4up  = (is_ie && (is_major >= 4));
		var is_ie5    = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
		var is_ie5_5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.5") !=-1));
		var is_ie5up  = (is_ie && !is_ie3 && !is_ie4);
		var is_ie5_5up =(is_ie && !is_ie3 && !is_ie4 && !is_ie5);
		var is_ie6    = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.")!=-1) );
		var is_ie6up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5 && !is_ie5_5);
	
		// KNOWN BUG: On AOL4, returns false if IE3 is embedded browser
		// or if this is the first browser window opened.  Thus the
		// variables is_aol, is_aol3, and is_aol4 aren't 100% reliable.
		var is_aol   = (agt.indexOf("aol") != -1);
		var is_aol3  = (is_aol && is_ie3);
		var is_aol4  = (is_aol && is_ie4);
		var is_aol5  = (agt.indexOf("aol 5") != -1);
		var is_aol6  = (agt.indexOf("aol 6") != -1);
	
		var is_opera = (agt.indexOf("opera") != -1);
		var is_opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
		var is_opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
		var is_opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
		var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
		var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);
	
		var is_webtv = (agt.indexOf("webtv") != -1); 
	
		var is_TVNavigator = ((agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1)); 
		var is_AOLTV = is_TVNavigator;
	
		var is_hotjava = (agt.indexOf("hotjava") != -1);
		var is_hotjava3 = (is_hotjava && (is_major == 3));
		var is_hotjava3up = (is_hotjava && (is_major >= 3));
	
		// *** JAVASCRIPT VERSION CHECK ***
		var is_js;
		if (is_nav2 || is_ie3) is_js = 1.0;
		else if (is_nav3) is_js = 1.1;
		else if (is_opera5up) is_js = 1.3;
		else if (is_opera) is_js = 1.1;
		else if ((is_nav4 && (is_minor <= 4.05)) || is_ie4) is_js = 1.2;
		else if ((is_nav4 && (is_minor > 4.05)) || is_ie5) is_js = 1.3;
		else if (is_hotjava3up) is_js = 1.4;
		else if (is_nav6 || is_gecko) is_js = 1.5;
		// NOTE: In the future, update this code when newer versions of JS
		// are released. For now, we try to provide some upward compatibility
		// so that future versions of Nav and IE will show they are at
		// *least* JS 1.x capable. Always check for JS version compatibility
		// with > or >=.
		else if (is_nav6up) is_js = 1.5;
		// NOTE: ie5up on mac is 1.4
		else if (is_ie5up) is_js = 1.3
	
		// HACK: no idea for other browsers; always check for JS version with > or >=
		else is_js = 0.0;
	
		// *** PLATFORM ***
		var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
		// NOTE: On Opera 3.0, the userAgent string includes "Windows 95/NT4" on all
		//        Win32, so you can't distinguish between Win95 and WinNT.
		var is_win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows 95")!=-1));
	
		// is this a 16 bit compiled version?
		var is_win16 = ((agt.indexOf("win16")!=-1) || 
				   (agt.indexOf("16bit")!=-1) || (agt.indexOf("windows 3.1")!=-1) || 
				   (agt.indexOf("windows 16-bit")!=-1) );  
	
		var is_win31 = ((agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("win16")!=-1) ||
						(agt.indexOf("windows 16-bit")!=-1));
	
		var is_winme = ((agt.indexOf("win 9x 4.90")!=-1));
		var is_win2k = ((agt.indexOf("windows nt 5.0")!=-1));
	
		// NOTE: Reliable detection of Win98 may not be possible. It appears that:
		//       - On Nav 4.x and before you'll get plain "Windows" in userAgent.
		//       - On Mercury client, the 32-bit version will return "Win98", but
		//         the 16-bit version running on Win98 will still return "Win95".
		var is_win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows 98")!=-1));
		var is_winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows nt")!=-1));
		var is_win32 = (is_win95 || is_winnt || is_win98 || 
						((is_major >= 4) && (navigator.platform == "Win32")) ||
						(agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1));
	
		var is_os2   = ((agt.indexOf("os/2")!=-1) || 
						(navigator.appVersion.indexOf("OS/2")!=-1) ||   
						(agt.indexOf("ibm-webexplorer")!=-1));
	
		var is_mac    = (agt.indexOf("mac")!=-1);
		// hack ie5 js version for mac
		if (is_mac && is_ie5up) is_js = 1.4;
		var is_mac68k = (is_mac && ((agt.indexOf("68k")!=-1) || 
								   (agt.indexOf("68000")!=-1)));
		var is_macppc = (is_mac && ((agt.indexOf("ppc")!=-1) || 
									(agt.indexOf("powerpc")!=-1)));
	
		var is_sun   = (agt.indexOf("sunos")!=-1);
		var is_sun4  = (agt.indexOf("sunos 4")!=-1);
		var is_sun5  = (agt.indexOf("sunos 5")!=-1);
		var is_suni86= (is_sun && (agt.indexOf("i86")!=-1));
		var is_irix  = (agt.indexOf("irix") !=-1);    // SGI
		var is_irix5 = (agt.indexOf("irix 5") !=-1);
		var is_irix6 = ((agt.indexOf("irix 6") !=-1) || (agt.indexOf("irix6") !=-1));
		var is_hpux  = (agt.indexOf("hp-ux")!=-1);
		var is_hpux9 = (is_hpux && (agt.indexOf("09.")!=-1));
		var is_hpux10= (is_hpux && (agt.indexOf("10.")!=-1));
		var is_aix   = (agt.indexOf("aix") !=-1);      // IBM
		var is_aix1  = (agt.indexOf("aix 1") !=-1);    
		var is_aix2  = (agt.indexOf("aix 2") !=-1);    
		var is_aix3  = (agt.indexOf("aix 3") !=-1);    
		var is_aix4  = (agt.indexOf("aix 4") !=-1);    
		var is_linux = (agt.indexOf("inux")!=-1);
		var is_sco   = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);
		var is_unixware = (agt.indexOf("unix_system_v")!=-1); 
		var is_mpras    = (agt.indexOf("ncr")!=-1); 
		var is_reliant  = (agt.indexOf("reliantunix")!=-1);
		var is_dec   = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) || 
			   (agt.indexOf("dec_alpha")!=-1) || (agt.indexOf("alphaserver")!=-1) || 
			   (agt.indexOf("ultrix")!=-1) || (agt.indexOf("alphastation")!=-1)); 
		var is_sinix = (agt.indexOf("sinix")!=-1);
		var is_freebsd = (agt.indexOf("freebsd")!=-1);
		var is_bsd = (agt.indexOf("bsd")!=-1);
		var is_unix  = ((agt.indexOf("x11")!=-1) || is_sun || is_irix || is_hpux || 
					 is_sco ||is_unixware || is_mpras || is_reliant || 
					 is_dec || is_sinix || is_aix || is_linux || is_bsd || is_freebsd);
	
		var is_vms   = ((agt.indexOf("vax")!=-1) || (agt.indexOf("openvms")!=-1));
		
		function browserSniff() {
				// convert all characters to lowercase to simplify testing
				var agt=navigator.userAgent.toLowerCase();
			
				// *** BROWSER VERSION ***
				// Note: On IE5, these return 4, so use is_ie5up to detect IE5.
				var is_major = parseInt(navigator.appVersion);
				var is_minor = parseFloat(navigator.appVersion);
			
				// Note: Opera and WebTV spoof Navigator.  We do strict client detection.
				// If you want to allow spoofing, take out the tests for opera and webtv.
				var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
							&& (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
							&& (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
				var is_nav2 = (is_nav && (is_major == 2));
				var is_nav3 = (is_nav && (is_major == 3));
				var is_nav4 = (is_nav && (is_major == 4));
				var is_nav4up = (is_nav && (is_major >= 4));
				var is_navonly      = (is_nav && ((agt.indexOf(";nav") != -1) ||
									  (agt.indexOf("; nav") != -1)) );
				var is_nav6 = (is_nav && (is_major == 5));
				var is_nav6up = (is_nav && (is_major >= 5));
				var is_gecko = (agt.indexOf('gecko') != -1);
			
			
				var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
				var is_ie3    = (is_ie && (is_major < 4));
				var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie 4")!=-1) );
				var is_ie4up  = (is_ie && (is_major >= 4));
				var is_ie5    = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
				var is_ie5_5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.5") !=-1));
				var is_ie5up  = (is_ie && !is_ie3 && !is_ie4);
				var is_ie5_5up =(is_ie && !is_ie3 && !is_ie4 && !is_ie5);
				var is_ie6    = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.")!=-1) );
				var is_ie6up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5 && !is_ie5_5);
			
				// KNOWN BUG: On AOL4, returns false if IE3 is embedded browser
				// or if this is the first browser window opened.  Thus the
				// variables is_aol, is_aol3, and is_aol4 aren't 100% reliable.
				var is_aol   = (agt.indexOf("aol") != -1);
				var is_aol3  = (is_aol && is_ie3);
				var is_aol4  = (is_aol && is_ie4);
				var is_aol5  = (agt.indexOf("aol 5") != -1);
				var is_aol6  = (agt.indexOf("aol 6") != -1);
			
				var is_opera = (agt.indexOf("opera") != -1);
				var is_opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
				var is_opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
				var is_opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
				var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
				var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);
			
				var is_webtv = (agt.indexOf("webtv") != -1); 
			
				var is_TVNavigator = ((agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1)); 
				var is_AOLTV = is_TVNavigator;
			
				var is_hotjava = (agt.indexOf("hotjava") != -1);
				var is_hotjava3 = (is_hotjava && (is_major == 3));
				var is_hotjava3up = (is_hotjava && (is_major >= 3));
			
				// *** JAVASCRIPT VERSION CHECK ***
				var is_js;
				if (is_nav2 || is_ie3) is_js = 1.0;
				else if (is_nav3) is_js = 1.1;
				else if (is_opera5up) is_js = 1.3;
				else if (is_opera) is_js = 1.1;
				else if ((is_nav4 && (is_minor <= 4.05)) || is_ie4) is_js = 1.2;
				else if ((is_nav4 && (is_minor > 4.05)) || is_ie5) is_js = 1.3;
				else if (is_hotjava3up) is_js = 1.4;
				else if (is_nav6 || is_gecko) is_js = 1.5;
				// NOTE: In the future, update this code when newer versions of JS
				// are released. For now, we try to provide some upward compatibility
				// so that future versions of Nav and IE will show they are at
				// *least* JS 1.x capable. Always check for JS version compatibility
				// with > or >=.
				else if (is_nav6up) is_js = 1.5;
				// NOTE: ie5up on mac is 1.4
				else if (is_ie5up) is_js = 1.3
			
				// HACK: no idea for other browsers; always check for JS version with > or >=
				else is_js = 0.0;
			
				// *** PLATFORM ***
				var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
				// NOTE: On Opera 3.0, the userAgent string includes "Windows 95/NT4" on all
				//        Win32, so you can't distinguish between Win95 and WinNT.
				var is_win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows 95")!=-1));
			
				// is this a 16 bit compiled version?
				var is_win16 = ((agt.indexOf("win16")!=-1) || 
						   (agt.indexOf("16bit")!=-1) || (agt.indexOf("windows 3.1")!=-1) || 
						   (agt.indexOf("windows 16-bit")!=-1) );  
			
				var is_win31 = ((agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("win16")!=-1) ||
								(agt.indexOf("windows 16-bit")!=-1));
			
				var is_winme = ((agt.indexOf("win 9x 4.90")!=-1));
				var is_win2k = ((agt.indexOf("windows nt 5.0")!=-1));
			
				// NOTE: Reliable detection of Win98 may not be possible. It appears that:
				//       - On Nav 4.x and before you'll get plain "Windows" in userAgent.
				//       - On Mercury client, the 32-bit version will return "Win98", but
				//         the 16-bit version running on Win98 will still return "Win95".
				var is_win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows 98")!=-1));
				var is_winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows nt")!=-1));
				var is_win32 = (is_win95 || is_winnt || is_win98 || 
								((is_major >= 4) && (navigator.platform == "Win32")) ||
								(agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1));
			
				var is_os2   = ((agt.indexOf("os/2")!=-1) || 
								(navigator.appVersion.indexOf("OS/2")!=-1) ||   
								(agt.indexOf("ibm-webexplorer")!=-1));
			
				var is_mac    = (agt.indexOf("mac")!=-1);
				// hack ie5 js version for mac
				if (is_mac && is_ie5up) is_js = 1.4;
				var is_mac68k = (is_mac && ((agt.indexOf("68k")!=-1) || 
										   (agt.indexOf("68000")!=-1)));
				var is_macppc = (is_mac && ((agt.indexOf("ppc")!=-1) || 
											(agt.indexOf("powerpc")!=-1)));
			
				var is_sun   = (agt.indexOf("sunos")!=-1);
				var is_sun4  = (agt.indexOf("sunos 4")!=-1);
				var is_sun5  = (agt.indexOf("sunos 5")!=-1);
				var is_suni86= (is_sun && (agt.indexOf("i86")!=-1));
				var is_irix  = (agt.indexOf("irix") !=-1);    // SGI
				var is_irix5 = (agt.indexOf("irix 5") !=-1);
				var is_irix6 = ((agt.indexOf("irix 6") !=-1) || (agt.indexOf("irix6") !=-1));
				var is_hpux  = (agt.indexOf("hp-ux")!=-1);
				var is_hpux9 = (is_hpux && (agt.indexOf("09.")!=-1));
				var is_hpux10= (is_hpux && (agt.indexOf("10.")!=-1));
				var is_aix   = (agt.indexOf("aix") !=-1);      // IBM
				var is_aix1  = (agt.indexOf("aix 1") !=-1);    
				var is_aix2  = (agt.indexOf("aix 2") !=-1);    
				var is_aix3  = (agt.indexOf("aix 3") !=-1);    
				var is_aix4  = (agt.indexOf("aix 4") !=-1);    
				var is_linux = (agt.indexOf("inux")!=-1);
				var is_sco   = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);
				var is_unixware = (agt.indexOf("unix_system_v")!=-1); 
				var is_mpras    = (agt.indexOf("ncr")!=-1); 
				var is_reliant  = (agt.indexOf("reliantunix")!=-1);
				var is_dec   = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) || 
					   (agt.indexOf("dec_alpha")!=-1) || (agt.indexOf("alphaserver")!=-1) || 
					   (agt.indexOf("ultrix")!=-1) || (agt.indexOf("alphastation")!=-1)); 
				var is_sinix = (agt.indexOf("sinix")!=-1);
				var is_freebsd = (agt.indexOf("freebsd")!=-1);
				var is_bsd = (agt.indexOf("bsd")!=-1);
				var is_unix  = ((agt.indexOf("x11")!=-1) || is_sun || is_irix || is_hpux || 
							 is_sco ||is_unixware || is_mpras || is_reliant || 
							 is_dec || is_sinix || is_aix || is_linux || is_bsd || is_freebsd);
			
				var is_vms   = ((agt.indexOf("vax")!=-1) || (agt.indexOf("openvms")!=-1));
		}


// ----------
// WINDOWS_JS : Confirmation dialog
// 

	function dialogConfirm( url, msg ) {
		if(!url) return false;
		if(!msg) msg = "Are you sure you want to do this?";

		Dialog.confirm(msg, 
					   {width:300, okLabel: "Yes", 
					   className: "custom",
					   id: "myDialogId",
					   cancel:function(win) { return false; },
					   ok:function(win) { window.location=url; return true;}
					  });
	}


// ----------
// WINDOWS_JS : Alert dialog
// 

	function dialogAlert( msg, afteraction ) {
		if(!msg) return false;


		Dialog.alert(msg, 
					 {width:300, height:100, className: "custom", okLabel: "OK", 
					  ok:function(win) { if(afteraction) { eval(afteraction); } return true;}});
	}


// ----------
// WINDOWS_JS : AJAX dialog panel
// 

	function dialogAlertAjax( url, afteraction, width ) {
		if(!url) return false;
		if(!width) width=700;

		Dialog.alert({url: url, options: {method: 'get'}}, 
					 {width: width, className: "custom", okLabel: "Close", 
					  ok:function(win) { if(afteraction) { eval(afteraction); } return true;}});
	}


// ----------
// WINDOWS_JS : AJAX confirm panel
// 

	function dialogConfirmAjax( url, targetid, msg ) {
		if(!url || !targetid) return false;
		if(!msg) msg = "Are you sure you want to do this?";
		
		Dialog.confirm(msg, 
					   {width:300, okLabel: "Yes", 
					   className: "custom",
					   id: "myDialogId",
					   cancel:function(win) { return false; },
					   ok:function(win) { new Ajax.Updater(targetid, url, {method: 'post', evalScripts:true }); return true;}
					  });
	}


// ----------
// Confirm from visitor whether to proceed or not
		function checkdelete(url,msg) {
			if ( ! msg )	msg = 'PLEASE CONFIRM:\nOK to proceed with delete?';
			if (confirm( msg ))
				window.location = url;
			else
				alert ( 'OK, action cancelled!' );
			
			return;
		}
	


// ----------
// SHOW/UPDATE AVAILABILITY CHART  ---- YEARLY CALENDAR VIEW

	function displayChart_Yearly(year) {
		form = $('editAvailabilityForm');
		contentid = 'chartContent';
		loadingid = 'chartLoading';

		url = 'availabilitytable.ajax.php';
		
		new Ajax.Updater(contentid, url, 
						 				 {method: 'get', 
										 evalScripts:true, 
										 onLoading: function() { $(contentid).toggle(); $(loadingid).toggle(); },
										 onSuccess: function() { $(loadingid).toggle(); $(contentid).toggle(); },
										 parameters : Form.serialize(form)}
										 );
		return false;
	}


	function toggleAvailabilityClick_Monthly( xnum, selectedDate, placeid, startday, roomid, unitid ) {
		if( $('clickAction_booked').checked ) {
			mode = "bookings";
		} else if( $('clickAction_unavailable').checked ) {
			mode = "availability";
		}
		
		tdcell = $( 'tdcell_' + xnum );

		if(mode == "bookings") {
			if(tdcell.className != 'booked_true') {
				tdcell.className='booked_true';
				//new Effect.Fade( tdcell, { from:1.0, to: 0.2 } );
	
				url = "/cms/pages/farms/availability.update.ajax.php?mode=booked&view=monthly&date="+selectedDate+"&placeid="+placeid+"&startday="+startday+"&roomid="+roomid+"&unitid="+unitid;

				var myRequest = new Ajax.Request(url, {
				  onSuccess: function() {
					  return;
				  },
				  onFailure: function() {
					  alert('Error!');
					  return false;
				  }
				});
			} else { // if the checkbox was NOT checked when clicked..
				tdcell.className='booked_false';
				//new Effect.Fade( tdcell, { from:0.2, to: 1.0 } );
				
				url = "/cms/pages/farms/availability.update.ajax.php?mode=notbooked&view=monthly&date="+selectedDate+"&placeid="+placeid+"&startday="+startday+"&roomid="+roomid+"&unitid="+unitid;
	
				var myRequest = new Ajax.Request(url, {
				  onSuccess: function() {
					  return;
				  },
				  onFailure: function() {
					  alert('Error!');
					  return false;
				  }
				});
			}
		}
		
		if(mode == "availability") {
			if(tdcell.className != 'unavailable_true') { 
				tdcell.className='unavailable_true';
				//new Effect.Fade( tdcell, { from:1.0, to: 0.2 } );
	
				url = "/cms/pages/farms/availability.update.ajax.php?mode=unavailable&view=monthly&date="+selectedDate+"&placeid="+placeid+"&startday="+startday+"&roomid="+roomid+"&unitid="+unitid;
	
				var myRequest = new Ajax.Request(url, {
				  onSuccess: function() {
					  return;
				  },
				  onFailure: function() {
					  alert('Error!');
					  return false;
				  }
				});
			} else { // if the checkbox was NOT checked when clicked..
				tdcell.className='unavailable_false';
				//new Effect.Fade( tdcell, { from:0.2, to: 1.0 } );
				
				url = "/cms/pages/farms/availability.update.ajax.php?mode=available&view=monthly&date="+selectedDate+"&placeid="+placeid+"&startday="+startday+"&roomid="+roomid+"&unitid="+unitid;
	
				var myRequest = new Ajax.Request(url, {
				  onSuccess: function() {
					  return;
				  },
				  onFailure: function() {
					  alert('Error!');
					  return false;
				  }
				});
			}
		}
		
		return;
	}
	
	
		
function emailCheck (emailStr) {
/* The following pattern is used to check if the entered e-mail address
   fits the user@domain format.  It also is used to separate the username
   from the domain. */
var emailPat=/^(.+)@(.+)$/
/* The following string represents the pattern for matching all special
   characters.  We don't want to allow special characters in the address. 
   These characters include ( ) < > @ , ; : \ " . [ ]    */
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
/* The following string represents the range of characters allowed in a 
   username or domainname.  It really states which chars aren't allowed. */
var validChars="\[^\\s" + specialChars + "\]"
/* The following pattern applies if the "user" is a quoted string (in
   which case, there are no rules about which characters are allowed
   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
   is a legal e-mail address. */
var quotedUser="(\"[^\"]*\")"
/* The following pattern applies for domains that are IP addresses,
   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
   e-mail address. NOTE: The square brackets are required. */
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
/* The following string represents an atom (basically a series of
   non-special characters.) */
var atom=validChars + '+'
/* The following string represents one word in the typical username.
   For example, in john.doe@somewhere.com, john and doe are words.
   Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
/* The following pattern describes the structure of a normal symbolic
   domain, as opposed to ipDomainPat, shown above. */
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")


/* Finally, let's start trying to figure out if the supplied address is
   valid. */

/* Begin with the coarse pattern to simply break up user@domain into
   different pieces that are easy to analyze. */
var matchArray=emailStr.match(emailPat)
if (matchArray==null) {
  /* Too many/few @'s or something; basically, this address doesn't
     even fit the general mould of a valid e-mail address. */
	alert("Email address seems incorrect (check @ and .'s)")
	return false
}
var user=matchArray[1]
var domain=matchArray[2]

// See if "user" is valid 
if (user.match(userPat)==null) {
    // user is not valid
    alert("The username doesn't seem to be valid.")
    return false
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
   host name) make sure the IP address is valid. */
var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
    // this is an IP address
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
	        alert("Destination IP address is invalid!")
		return false
	    }
    }
    return true
}

// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	alert("The domain name doesn't seem to be valid.")
    return false
}

/* domain name seems valid, but now make sure that it ends in a
   three-letter word (like com, edu, gov) or a two-letter word,
   representing country (uk, nl), and that there's a hostname preceding 
   the domain or country. */

/* Now we need to break up the domain to get a count of how many atoms
   it consists of. */
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || 
    domArr[domArr.length-1].length>3) {
   // the address must end in a two letter or three letter word.
   alert("The address must end in a three-letter domain, or two letter country.")
   return false
}

// Make sure there's a host name preceding the domain.
if (len<2) {
   var errStr="This address is missing a hostname!"
   alert(errStr)
   return false
}

// If we've gotten this far, everything's valid!
return true;
}