window.onload = function()	{	//	Run onload

	if(!document.getElementById) return false;			//	Quit if browser doesn't support DOM scripting

	var submit = document.getElementById("submit");

	submit.onclick = function()	{	//	Validate form on submission
		var email      = document.getElementById("email");
		var name       = document.getElementById("name");
		var zip        = document.getElementById("zip");
		var validEmail = /^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
								
		if(name.value=="" || !validEmail.test(email.value) || zip.value!=5)	{
			alert("You need to enter your name, a valid email address, and the sum of 1 + 4, which is 5. (The math prevents spambots from using this form.)");
			return false;
		}
		return true;
	}	//	END validate form on submission
	
}	//	END run onload