function PopUP(URL, title)
{
 var xpos, ypos;
 xpos = (screen.width/2)-(640/2)
 ypos = (screen.height/2)-(585/2)
 
 window.open(URL, title,'width=640, height=585, left='+xpos+',top='+ypos+',toolbar=no, location=no, scrollbar=yes, resizable=yes');

}