function emailformSubmit(idlayer)
{var a = idlayer;
var x=document.forms["SKCalc"]["email"].value;
var atpos=x.indexOf("@");
var dotpos=x.lastIndexOf(".");
if (atpos<1 || dotpos<atpos+2 || dotpos+2>=x.length)
  {
  alert("Please enter a valid e-mail address!");
  return false;
  }
document.getElementById("SKCalc").action=a;
document.getElementById("SKCalc").onsubmit=a;
document.getElementById("SKCalc").submit();
}