function  CheckAll(itemname,a){
     if(a.checked)
     {
      var aa=document.getElementsByName(itemname);
    if(aa==undefined) return;
    for (var i=0; i<aa.length; i++)aa[i].checked =true;
     }
     else
     {
    var aa=document.getElementsByName(itemname);
    if(aa==undefined) return;
    for (var i=0; i<aa.length; i++)aa[i].checked =false ;
     }
   
} 
function openwin(url) { 
window.open (url, "newwindow", "height=150, width=300, toolbar =no, menubar=no, scrollbars=no, resizable=no, location=no, status=no") 
}