function hide(el) {
	document.getElementById(el).style.visibility='hidden';
	document.getElementById(el).style.display='none';
}
function show(el) {
	document.getElementById(el).style.visibility='visible';
	document.getElementById(el).style.display='';
}


function popUp(URL, height, width) {
	day = new Date();
	id = day.getTime();

	left2 = (screen.width - width) /2;
	top2 = (screen.height - height) /2;
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width='+width+',height='+height+',left ='+left2+',top ='+top2);");
}

var arrayOfRolloverClasses = new Array();
var arrayOfClickClasses = new Array();
var activeRow = false;
var activeRowClickArray = new Array();

function highlightTableRow()
{
	var tableObj = this.parentNode;
	if(tableObj.tagName!='TABLE')tableObj = tableObj.parentNode;

	if(this!=activeRow){
		this.setAttribute('origCl',this.className);
		this.origCl = this.className;
	}
	this.className = arrayOfRolloverClasses[tableObj.id];
	
	activeRow = this;
	
}

function clickOnTableRow()
{
	var tableObj = this.parentNode;
	if(tableObj.tagName!='TABLE')tableObj = tableObj.parentNode;		
	
	if(activeRowClickArray[tableObj.id] && this!=activeRowClickArray[tableObj.id]){
		activeRowClickArray[tableObj.id].className='';
	}
	this.className = arrayOfClickClasses[tableObj.id];
	
	activeRowClickArray[tableObj.id] = this;
			
}

function resetRowStyle()
{
	var tableObj = this.parentNode;
	if(tableObj.tagName!='TABLE')tableObj = tableObj.parentNode;

	if(activeRowClickArray[tableObj.id] && this==activeRowClickArray[tableObj.id]){
		this.className = arrayOfClickClasses[tableObj.id];
		return;	
	}
	
	var origCl = this.getAttribute('origCl');
	if(!origCl)origCl = this.origCl;
	this.className=origCl;
	
}
	
function addTableRolloverEffect(tableId,whichClass,whichClassOnClick)
{
	arrayOfRolloverClasses[tableId] = whichClass;
	
	var tableObj = document.getElementById(tableId);
	var tBody = tableObj.getElementsByTagName('TBODY');
	if(tBody){
		var rows = tBody[0].getElementsByTagName('TR');
	}else{
		var rows = tableObj.getElementsByTagName('TR');
	}
	for(var no=0;no<rows.length;no++){
		rows[no].onmouseover = highlightTableRow;
		rows[no].onmouseout = resetRowStyle;
		

	}
	
}

//preload images
var pathToImg=new Array()
for (i=0;i<bgimages.length;i++)
{
  pathToImg[i]=new Image()
  pathToImg[i].src=bgimages[i]
}

var inc=-1

function bgSlide()
{
  if (inc<bgimages.length-1)
    inc++
  else
    inc=0
	if(document.getElementById('menu')) {
  		document.getElementById('menu').style.background='url('+pathToImg[inc].src+')';
	}
}

if (document.all||document.getElementById)
  window.onload=new Function('setInterval("bgSlide()",3000)');