function validateRequired(sparam,ilength) {
    if ((sparam == null) || (sparam == '')) return false;
    if (sparam.toString().length < ilength) return false;
    return true;
}
function validateEmail(sparam) {       
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = sparam;
   if(reg.test(address) == false) {      
      return false;
   }
   return true;
}