function changeImage( objName, toImgName )
{
	obj = document.getElementById( objName );
	obj.src = "images/"+toImgName+".gif";
}

function tabMouseOver( tabName )
{
	// highlight tab
	if(document.getElementById(tabName+"Label").className=="tabLabelOff")
	{
		document.getElementById(tabName+"Head").src="images/tabOverHead.gif";
		document.getElementById(tabName+"Label").className="tabLabelOver";
		document.getElementById(tabName+"End").src="images/tabOverEnd.gif";
	}
}

function tabMouseOut( tabName )
{
	// unhighlight tab
	if(document.getElementById(tabName+"Label").className=="tabLabelOver")
	{
		document.getElementById(tabName+"Head").src="images/tabOffHead.gif";
		document.getElementById(tabName+"Label").className="tabLabelOff";
		document.getElementById(tabName+"End").src="images/tabOffEnd.gif";
	}
}

var currentTab = 1;

function tabClick2() {
	return true;
}

function tabClick( tabName, tabNum, totalTabNum )
{	
	if (!tabClick2(tabNum)) return;

	document.getElementById(tabName+tabNum).style.display="inline";
	document.getElementById(tabName+tabNum+"Head").src="images/tabOnHead.gif";
	document.getElementById(tabName+tabNum+"Label").className="tabLabelOn";
	document.getElementById(tabName+tabNum+"End").src="images/tabOnEnd.gif";
	for(var i = 1; i <= totalTabNum; i++) //>
	{
		if(i != tabNum){
			// change layer visibility
			document.getElementById(tabName+i).style.display="none";
			// change tab image
			document.getElementById(tabName+i+"Head").src="images/tabOffHead.gif";
			document.getElementById(tabName+i+"Label").className="tabLabelOff";
			document.getElementById(tabName+i+"End").src="images/tabOffEnd.gif";
		}
	}
	currentTab = tabNum;
}

function openPopup(target_url,window_name,window_width,window_height) {
	window.open(target_url,window_name,'width='+window_width+',height='+window_height+',scrollbars=yes,resizable=yes,toolbar=no,location=no,directories=no, status=no');
}