function isValidEmail(strEmail)
{
  validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;
  strEmail = document.getElementById('Sign up for Newsletter').value;

   // search email text for regular exp matches
    if (strEmail.search(validRegExp) == -1) 
   {
      return false;
    } 
    return true; 
}
function valform()
{
	if (document.getElementById('Sign up for Newsletter').value=="")
	{
			alert("Please Enter Your Email...");
			document.getElementById('Sign up for Newsletter').focus();
			return false;
	}
	else if(!isValidEmail('Sign up for Newsletter'))
	    {
	    alert("Please enter valid Email");
		document.getElementById('Sign up for Newsletter').focus();
		return (false)
	    } 
		return true;  
		
		
		
		
		
}