function popup(url, name, size_and_location, attributes) {
 var tokArray1 = size_and_location.split(";");
 var bef = "";
  
 if(typeof tokArray1[0] !="undefined") { bef = bef +    "width=" + tokArray1[0]; }
 if(typeof tokArray1[1] !="undefined") { bef = bef + ",height=" + tokArray1[1]; }
 if(typeof tokArray1[2] !="undefined") { bef = bef +   ",left=" + tokArray1[2]; }
 if(typeof tokArray1[3] !="undefined") { bef = bef +    ",top=" + tokArray1[3]; }

 var tokArray2 = attributes.split(";");
 if(tokArray2[0]=="all") {
   bef = bef + ",location=yes";
   bef = bef + ",menubar=yes";
   bef = bef + ",resizable=yes";
   bef = bef + ",scrollbars=yes";
   bef = bef + ",status=yes";
   bef = bef + ",toolbar=yes";
 }
 else {
   for(i=0;i<tokArray2.length;i++) { bef = bef + "," + tokArray2[i] + "=yes"; }
 }

 w=eval(window.open(url, name, bef));
 w.focus();
}