function clickclear(thisfield, defaulttext) {
  if (thisfield.value == defaulttext) {
    thisfield.value = "";
  }
}
 
function clickrecall(thisfield, defaulttext) {
  if (thisfield.value == "") {
   thisfield.value = defaulttext;
  }
}

function emailcheck(cur)
{
var string1=cur.Email1.value
if (string1.indexOf("@")==-1)
{
alert("Please input a valid email address!")
return false
}
}