//function to check valid email address
function isValidEmail(objField){

	validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;

   // search email text for regular exp matches
    if (objField.search(validRegExp) == -1) 
   {
      //alert('A valid e-mail address is required.\nPlease amend and retry');

      return false;
    } 

    return true; 
}