function ADS_LiveHelp(){
	var myWidth = 0, myHeight = 0;
	if( typeof( window.innerWidth ) == 'number' ) {
		//Non-IE
		myWidth = window.innerWidth;
		myHeight = window.innerHeight;
	} else if( document.documentElement &&( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
		//IE 6+ in 'standards compliant mode'
		myWidth = document.documentElement.clientWidth;
		myHeight = document.documentElement.clientHeight;
	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		//IE 4 compatible
		myWidth = document.body.clientWidth;
		myHeight = document.body.clientHeight;
	}
	
	winH = (myHeight-480)/2;
	winW = (myWidth-500)/2;
	
	this.openWindow = function(id){
		var uri = "http://devlivehelp.idatalink.com/chat_link.php?trackingID="+id;
		chatwindow = window.open(uri,"customerchat", "toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbars=0,resizable=1,width=500,height=480,left="+winW+",top="+winH, '_self');	
	};
}