// Trinity conferences site-wide javascript functions 

	//standard window opener
	function openBrWindow(theURL,winName,features) {
	  window.open(theURL,winName,features);	  
	  return false;
	}
	
	//text size switcher
	function fontsizeup() {
	  active = getActiveStyleSheet();
	  switch (active) {
		case 'A--' : 
		  setActiveStyleSheet('A-');
		  break;
		case 'A-' : 
		  setActiveStyleSheet('A');
		  break;
		case 'A' : 
		  setActiveStyleSheet('A+');
		  break;
		case 'A+' : 
		  setActiveStyleSheet('A++');
		  break;
		case 'A++' :
		  break;
		default :
		  setActiveStyleSheet('A');
		  break;
	  }
	}
	
	function fontsizedown() {
	  active = getActiveStyleSheet();
	  switch (active) {
		case 'A++' : 
		  setActiveStyleSheet('A+');
		  break;
		case 'A+' : 
		  setActiveStyleSheet('A');
		  break;
		case 'A' : 
		  setActiveStyleSheet('A-');
		  break;
		case 'A-' : 
		  setActiveStyleSheet('A--');
		  break;
		case 'A--' : 
		   break;
		default :
		  setActiveStyleSheet('A--');
		  break;
	  }
	}
	
	function setActiveStyleSheet(title) {
	  var i, a, main;
	  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
		  a.disabled = true;
		  if(a.getAttribute("title") == title) a.disabled = false;
		}
	  }
	}
	
	function getActiveStyleSheet() {
	  var i, a;
	  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
	  }
	  return null;
	}
	
	function getPreferredStyleSheet() {
	  return ('A-');
	}
	
	function createCookie(name,value,days) {
	  if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	  }
	  else expires = "";
	  document.cookie = name+"="+value+expires+"; path=/";
	}
	
	function readCookie(name) {
	  var nameEQ = name + "=";
	  var ca = document.cookie.split(';');
	  for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	  }
	  return null;
	}
	
	window.onload = function(e) {
	  var cookie = readCookie("style");
	  var title = cookie ? cookie : getPreferredStyleSheet();
	  setActiveStyleSheet(title);
	}
	
	window.onunload = function(e) {
	  var title = getActiveStyleSheet();
	  createCookie("style", title, 365);
	}
	
	var cookie = readCookie("style");
	var title = cookie ? cookie : getPreferredStyleSheet();
	if (title == 'null') {
	  title = getPreferredStyleSheet();
	}
	
	setActiveStyleSheet(title);
	
	function preloadImages() { //v3.0
	  var d=document; if(d.images){ if(!d.p) d.p=new Array();
		var i,j=d.p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)
		if (a[i].indexOf("#")!=0){ d.p[j]=new Image; d.p[j++].src=a[i];}}
	}
	
	function swapImgRestore() { //v3.0
	  var i,x,a=document.sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
	}
	
	function findObj(n, d) { //v4.01
	  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
		d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
	  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document);
	  if(!x && d.getElementById) x=d.getElementById(n); return x;
	}
	
	function swapImage() { //v3.0
	  var i,j=0,x,a=swapImage.arguments; document.sr=new Array; for(i=0;i<(a.length-2);i+=3)
	   if ((x=findObj(a[i]))!=null){document.sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
	}
	
	
	TrapClicksForHowManySeconds = 12;
	AlertBoxMessage = "One click is sufficient. The server should respond momentarily.\n\n\nClick the \"OK\" button.";
	PopUpBoxURL = "";
	PopUpBoxHeight = 300;
	PopUpBoxWidth = 500;
	NameOfForm = "form1";
	NameOfSubmitButton = "";
	NewTextForSubmitButton = "Please Wait . . .";
	
	TrapTime = 0;
	DoubleClickTrapperCounter = 0;
	
	function subclick(buttonname) 
	{
		NameOfSubmitButton = buttonname
		DoubleClickTrapperCounter++;
		DoubleClickTrapperButton();
		var trapTheClick = false;
		if(DoubleClickTrapperCounter > 1 ) { trapTheClick = true; }
		if(trapTheClick == true) {
			if(TrapTime == 0) {
				var tDate = new Date;
				TrapTime = tDate.valueOf();
				}
			else {
				var tDate = new Date;
				var localTrapTime = tDate.valueOf();
				if((localTrapTime - TrapTime) > (TrapClicksForHowManySeconds * 1000)) {
					TrapTime = 0;
					trapTheClick = false;
					DoubleClickTrapperCounter = 0;
					}
				}
			}
		var valueToReturn = true;
		if(trapTheClick == true) {
			valueToReturn = false;
			DoubleClickTrapperPopUp();
			DoubleClickTrapperAlert();
			}
		return valueToReturn;
	} 
	
	
	function DoubleClickTrapperButton() 
	{
		var formname   = NameOfForm;
		var submitname = NameOfSubmitButton;
		var newtext    = NewTextForSubmitButton;
		if(formname.length > 0 && submitname.length > 0 && newtext.length > 0) {
			var s = 'document.' + NameOfForm + '.' + NameOfSubmitButton + ".value = '" + NewTextForSubmitButton + "'";
			eval(s);
			}
	} 
	
	
	function DoubleClickTrapperPopUp() 
	{
		var url = PopUpBoxURL;
		if(url.length > 0) {
			if(PopUpBoxHeight < 1) { PopUpBoxHeight = 200; }
			if(PopUpBoxWidth < 1) { PopUpBoxWidth = 300; }
			window.open(url,'',('height=' + PopUpBoxHeight + ',width=' + PopUpBoxWidth + ',resizable=yes,scrollbars=yes'));
			}
	} 
	
	
	function DoubleClickTrapperAlert() {
	var message = AlertBoxMessage;
	if(message.length > 0) { alert(AlertBoxMessage); }
	}