function valMe(a)
{
 var exclude=/[^@\-\.\w]|^[_@\.\-]|[\._\-]{2}|[@\.]{2}|(@)[^@]*\1/;
 var check=/@[\w\-]+\./;
 var checkend=/\.[a-zA-Z]{2,3}$/;
 if (a == "")
  {
   alert("Please Provide An Email Address.")
   return false   
  }
 else if (a.indexOf("@") < 0)
  {
   alert("Please Provide A Valid Email Address.")
   return false   
  }
 else if(((a.search(exclude) != -1)||(a.search(check)) == -1)||(a.search(checkend) == -1))
  {
   alert("Please Provide A Valid Email Address.");
   return false
  }
   return true  
}