function DevUserCheck(form)
//Script to handle Client side Validation
{
  


  if (document.AuthorReg.UserName.value==""){
       alert("Please Enter UserName to Check Avalibility!");
}
   else
{
var userval = document.AuthorReg.UserName.value;

  window.open('Devusercheck.asp?UserName='+userval,'','scrollbars=0,menubar=0,height=100,width=200,resizable=no,toolbar=0,location=0,statusbar=0');

       return false;
     } 

}