//Email Newsletter Signup Validation
function isValidEmail() {
 var Email=document.form1.Email.value;
 if (Email.indexOf(' ')==-1 
      && 0<Email.indexOf('@')
      && Email.indexOf('@')+1 < Email.length
	  && 0<Email.indexOf('.')
 ) return true;
 else alert ('Invalid email address!')
 return false;
}