function popWin(url,winname,w,h,scroll){
	var LeftPosition = (screen.width)?(screen.width-w)/2:100;
	var TopPosition = (screen.height)?(screen.height-h)/2:100;
	settings = 'width='+ w +',height='+ h +',top='+ TopPosition +',left='+ LeftPosition +',scrollbars='+ scroll +',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
	win = window.open(url, winname, settings);
	win.focus();
}