function ShowPict(URL) { 
var hleft=(screen.width-640)/2;
var hheight=(screen.height-80);
var w=window.open(''+URL+'','','top=5,left='+hleft+',height='+hheight+',width=640,status=0,scrollbars=1,toolbar=0,resizable=1,menubar=0,titlebar=0');
w.focus();
}