function doImgOn(index){
	if(document.images){
		document["img"+index].src = eval("imgZone"+index+"On.src");
		return true;
	}
}

function doImgOff(index){
	if(document.images){
		document["img"+index].src = eval("imgZone"+index+"Off.src");
		return true;
	}
}

function openPopup(theURL,winName,features,width,height)
{
	var objPopup = returnPopup(theURL,winName,features,width,height);
	objPopup.focus();
}

function returnPopup(theURL,winName,features,width,height)
{
	var winWidth	= width;
	var winHeight	= height;
	var strWinSize	= ",width=" + winWidth + ",height=" + winHeight;

	if (window.screen) {
		var winPosL = (screen.availWidth - winWidth) / 2;
		var winPosT = (screen.availHeight - winHeight) / 2;
		strWinSize += ",left=" + winPosL + ",screenX=" + winPosL + ",top=" + winPosT + ",screenY=" + winPosT;
	}	
	
	return window.open(theURL,winName,features + strWinSize);
}