function popupWindow(url) {
  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=450,height=280,screenX=150,screenY=150,top=150,left=150')
}
function popupWindowCert(url,w,h) {
	var l=150, t=150, p1=20, p2=40; 
	if (w>screen.availWidth-p1) {
		//h = h*screen.availWidth/w;
		w = screen.availWidth-p1;
		l=0; t=0;
	}
	
	if (h>screen.availHeight-p2) {
		h = screen.availHeight-p2;
		l=0; t=0;
	}
		
  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width='+w+',height='+h+',screenX=150,screenY=150,top='+t+',left='+l)
}