function email_window(URL){
 if(navigator.appName == "Netscape") 
  window.open(URL,"","toolbar=no,directories=no,menubar=no,height=520,width=460");
else
  window.open(URL,"","toolbar=no,directories=no,menubar=no,height=460,width=370");
}

function calling_window(URL){
 window.open(URL,"","toolbar=no,directories=no,menubar=no,height=240,width=420");
}