/*
	Libraries	 
 */
 
/*************************************************************************
 radio button easies.
*************************************************************************/ 
 function getSelectedRadio(buttonGroup) {
   // returns the array number of the selected radio button or -1 if no button is selected
   if (buttonGroup[0]) { // if the button group is an array (one button is not an array)
      for (var i=0; i<buttonGroup.length; i++) {
         if (buttonGroup[i].checked) {
            return i
         }
      }
   } else {
      if (buttonGroup.checked) { return 0; } // if the one button is checked, return zero
   }
   // if we get to this point, no radio button is selected
   return -1;
} // Ends the "getSelectedRadio" function

function getSelectedRadioValue(buttonGroup) {
   // returns the value of the selected radio button or "" if no button is selected
   var i = getSelectedRadio(buttonGroup);
   if (i == -1) {
      return "";
   } else {
      if (buttonGroup[i]) { // Make sure the button group is an array (not just one button)
         return buttonGroup[i].value;
      } else { // The button group is just the one button, and it is checked
         return buttonGroup.value;
      }
   }
} // Ends the "getSelectedRadioValue" function
 
 
/*************************************************************************
	String Manipulation
*************************************************************************/	
 
	// only allow $1,234
	function isNumeric(string) {
		var reg = /[^0-9$,.-]/i;
		if(reg.exec(string)) return false;
		return true;
	}

	function numbersOnly(string) {
		return [string.replace(/[^0-9.]/gi, "")].join("");
	}	 
	 
	function trim(str) {
		if(str)
			return str.replace(/^\s*|\s*$/g,"");
		else
			return "";
	}

 /*************************************************************************
	Generic Form Validator
 *************************************************************************/
 
	function validateforms(form){	
		for(i = 0; i < form.elements.length; i++){
			// first check required elements as filled in
			if (trim(form.elements[i].value) == "" && form.elements[i].getAttribute("required") == "true") {
				new Effect.Highlight(form.elements[i], {});
				new Effect.Highlight(form.elements[i], { queue: 'end'});
				new Effect.Highlight(form.elements[i], { queue: 'end'});
				new Effect.Highlight(form.elements[i], { queue: 'end'});
				alert("Please enter a value in the "+ form.elements[i].getAttribute("description") +" field.");
				form.elements[i].focus();
				return false ;
			}		
			
			//Check numeric fields expected	
			if (form.elements[i].getAttribute("numeric") == "true") {
				if(form.elements[i].value != "" && !isNumeric(form.elements[i].value)){
					new Effect.Highlight(form.elements[i], {});
					new Effect.Highlight(form.elements[i], { queue: 'end'});
					new Effect.Highlight(form.elements[i], { queue: 'end'});
					new Effect.Highlight(form.elements[i], { queue: 'end'});
					alert("Please enter a numeric value in the "+ form.elements[i].getAttribute("description") +" field.");
					form.elements[i].focus();
					return false ;
				}
				else if(form.elements[i].value != "" && isNumeric(form.elements[i].value)){
					form.elements[i].value = numbersOnly(form.elements[i].value);				
				}
			}
			
			/* Check Email */
			if (form.elements[i].getAttribute("email") == "true") {
				var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
				if (!filter.test(form.elements[i].value)){
					new Effect.Highlight(form.elements[i], {});
					new Effect.Highlight(form.elements[i], { queue: 'end'});
					new Effect.Highlight(form.elements[i], { queue: 'end'});
					new Effect.Highlight(form.elements[i], { queue: 'end'});
					alert("The value in the '" +form.elements[i].getAttribute("description") +"' field is not a valid email address.");
					form.elements[i].focus();
					return false;
				}			
			}
			
			/* Check Date
			if (form.elements[i].getAttribute("date") == "true") {
				selecteddate = new Date(form.elements[i].value);
				mynow = new Date();		
				alert(selecteddate.getTime());
				alert(mynow.getTime());	
				if(selecteddate.getTime() <= mynow.getTime()){
					alert("Please enter a date not already passed for the date field.");
					form.elements[i].focus();
					return false ;
				}
			}
			*/
			//		 then check other things				    
		}
		return true ;  
	}

 /*************************************************************************
	Alerts, Messageboxes, Confirms
 *************************************************************************/ 
   
	function deleteconfirm(myform){
			return confirm('Are you sure you wish to delete this record? Delete actions cannot be undone.');       
	}

	function cancelAction(){
		history.go(-1); 
	}	
	
	function coverSetVisible(obj) {
		var divRef = document.getElementById(obj);
		var ifrRef = document.getElementById(obj+'cover');
	 
		ifrRef.style.display = "block";
		ifrRef.style.width = divRef.offsetWidth;
		ifrRef.style.height = divRef.offsetHeight;
		ifrRef.style.top = divRef.style.top;
		ifrRef.style.left = divRef.style.left;
		ifrRef.style.zIndex = divRef.style.zIndex - 1;
		//alert(IfrRef.style.zIndex);
	}
  
  
 // Selected Tab
 var tabSelected = "";
  
 var dom = document.getElementById;
 var iex = document.all;
 var ns4 = document.layers;
 
 function getElement(name, nest){
	nest = nest ? 'document.'+nest+'.' : '';
	var el = dom ? document.getElementById(name) : iex ? document.all[name] : ns4 ? eval(nest+'document.'+name) : false;
	el.css = ns4 ? el : el.style;
	return el;
 }   
 
/*************************************************************************
	Form Change Checking (to prevent users from navigating away from a changed form)
*************************************************************************/
		function jsxge(jsxe,jsxn) { jsxn = jsxn ? 'document.'+jsxn+'.' : ''; return document.getElementById ? document.getElementById(jsxe) : document.all ? document.all[jsxe] : document.layers ? eval(jsxn+'document.'+jsxe) : false; }
		
		// check for change
		function nav(page) {
			var changelog = jsxge("changelog");
			var string = changelog.value;
			if (string != "" && string) {
				var input = confirm("You have made changes to the following items:\n\n"+string+"\n\nIf you navigate away from this page without saving these changes will be lost.");
			} else input = true;
			if (input) 
				{ return true; } 
			else return false;
		}
		
		//update change log
		function doChange(el) {
			var changelog = jsxge("changelog");
			if (changelog.value != "") changelog.value += "\n";
			changelog.value += this.getAttribute("description");			
		}
		
		function changecheck(form){		
			//Mark all items on the page with an onchange element
			for(i = 0; i < form.elements.length; i++){
				form.elements[i].onchange = doChange;			
			}		
			
			//Then mark all items in the adminColumn with a function to prompt confirm
			var x = document.getElementById('adminColumn');
			if (!x) return;
			var y = x.getElementsByTagName('a');
			for (var i=0;i<y.length;i++){			
				/*if(ns4)
					y[i].addEventListener("onclick", nav, false);
				else if(iex)
					y[i].attachEvent("onclick", nav);				
					*/
				y[i].onclick = nav;
			}
		}

 
/*************************************************************************
	Event Model Normalizers (IE vs DOM)
*************************************************************************/
 

function addEvent( obj, type, fn, useCapture )
{
	if (obj.addEventListener)
		obj.addEventListener( type, fn, false );
	else if (obj.attachEvent)
	{
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
	}
}

function removeEvent( obj, type, fn, useCapture )
{
	if (obj.removeEventListener)
		obj.removeEventListener( type, fn, false );
	else if (obj.detachEvent)
	{
		obj.detachEvent( "on"+type, obj[type+fn] );
		obj[type+fn] = null;
		obj["e"+type+fn] = null;
	}
}


function fixMac() {
	var agt= navigator.userAgent.toLowerCase();
	if(agt.indexOf("mac")>=0) {
		elm = document.getElementById("navigation");
		elm.style.lineHeight = '19px';
	}
}

     function pause(numberMillis) {
        var dialogScript = 
           'window.setTimeout(' +
           ' function () { window.close(); }, ' + numberMillis + ');';
        var result = 
// For IE5.
         window.showModalDialog(
           'javascript:document.writeln(' +
            '"<script>' + dialogScript + '<' + '/script>")');
}