function isEmail(elm)
{
   if(elm.value.indexOf("@") != "-1"
      && elm.value.indexOf(".") != "-1"
	   && elm.value != "")
		return true;
	else
		return false;
}

function isFilled(elm)
{
   if(elm.value == "" || elm.value == null)
      return false;
	else
	   return true;
}

function isPhoneNumber(elm) {
   var valid = true;
   var goodChars = "0123456789-";
   var i = 0;

   if (elm.value == "") {
      valid = false;
   }

   for (i = 0; i <= elm.value.length - 1; i++) {
      if (goodChars.indexOf(elm.value.charAt(i)) == -1) {
         valid = false;
      }
   }

   return valid;
}

function getFormElement(s_form, s_id)
{
   return document.forms[s_form].elements[s_id];
}