var errFound = false;

function ValidEmail(item) {
    if (!ValidLength(item, 5)) return false;
    if (item.indexOf('@', 0) == -1) return false;
    return true;
}
function ValidLength(item, len) {
    return (item.length >= len);
}
function error(elem, text) {
    if (errFound) return;
    window.alert(text);
    elem.select();
    elem.focus();
    errFound = true;
}
function Validate() {
    errFound = false;
    if (!ValidEmail(document.sform.email.value, 1))
        error(document.sform.email, "Please Enter Email ");

    return !errFound;
}
 function clearMe(email){
  if (email.defaultValue==email.value)
   email.value = ""
 }