<!--
 function screen_height ()
 {
     if (window.screen)    
         return (screen.height);
     else if (navigator.javaEnabled ())   
         {
         var toolkit = java.awt.Toolkit.getDefaultToolkit ();
         var screen_size = toolkit.getScreenSize ();
         return (screen_size.height);
         }
     return (0);
 }
 
 function screen_width ()
 {
     if (window.screen)   
         return (screen.width);
     else if (navigator.javaEnabled ())    
         {
         var toolkit = java.awt.Toolkit.getDefaultToolkit ();
         var screen_size = toolkit.getScreenSize ();
         return (screen_size.width);
         }
     return (0);
 }
  
function popup(URL,width,height) {
 sheight = (((screen_height()-20)-height)/2);
 swidth = (screen_width() - width)/2;
 eval("page = window.open(URL, 'PopUp', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width="+width+",height= "+height+",left = "+swidth+",top ="+sheight+"');");
 page.main = self;
 page.focus();
 } 
//-->