function validate() {

	var first_name = document.getElementById("first_name").value;
	var last_name = document.getElementById("last_name").value;
	var email = document.getElementById("email").value;
	var web_url = document.getElementById("web_url").value;
	var keyword1 = document.getElementById("keyword1").value;
	var keyword2 = document.getElementById("keyword2").value;
	var keyword3 = document.getElementById("keyword3").value;
	var geographic_area = document.getElementById("geographic_area").value;
	
	if (first_name == "") {
		alert('Please enter your first name');
		return false;
	} else if (last_name == "") {
		alert('Please enter your last name');
		return false;
	} else if (email == "") {
		alert('Please enter your email address');
		return false;
	} else if ((email.indexOf("@") == "-1") || (email.indexOf(".") == "-1")) { 
		alert('Please enter a properly formatted email address');
		return false;
	} else if ((web_url == "") || (web_url == "http://")) {
		alert('Please enter your website address');
		return false;
	} else if (keyword1 == "") {
		alert('Please enter a first keyword or phrase');
		return false;
	} else if (keyword2 == "") {
		alert('Please enter a second keyword or phrase');
		return false;
	} else if (keyword3 == "") {
		alert('Please enter a third keyword or phrase');
		return false;
	} else if (geographic_area == "") {
		alert('Please enter your geographic area of interest');
		return false;
	} else {
		return true;
	}

}