function chkform()
{
	var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var email = document.form.Email.value;
	/*if(document.form.Name.value=="") {
		alert("Please Enter Name") ;
		document.form.Name.focus() ;
		return false ;
	}
	else*/
	if(document.form.Email.value=="") {
		alert("Please Enter E-mail") ;
		document.form.Email.focus() ;
		return false ;
	}
   else if(reg.test(email) == false) {
      alert('Invalid Email Address');
	  document.form.Email.focus();
      return false;
   }
	return true;
}