function openWindow(url,winname,winfeat,wid, ht) { //v2.0
	var LeftPosition, topPosition;
	var w=wid;
	var h=ht;
	var win = null;
	var mypage=url;
	var myname=winname;
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	winfeatures ='height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars=no,resizable'
	win = window.open(mypage,myname,winfeatures)
}