function checkdata() {
	var errormessage = "Please be sure the following fields have been completed:\n\r\n";
	var noerror = 1;

	
		var field = document.getElementById("first_name");
		if (field.value == "" || field.value == " ") {
			errormessage += "First Name\r\n";
			noerror = 0;
		}
		
		var field = document.getElementById("last_name");
		if (field.value == "" || field.value == " ") {
			errormessage += "Last Name\r\n";
			noerror = 0;
		}
		
		var field = document.getElementById("email");
		if (field.value == "" || field.value == " ") {
			errormessage += "Email\r\n";
			noerror = 0;
		}
		
		var field = document.getElementById("phone");
		if (field.value == "" || field.value == " ") {
			errormessage += "Phone\r\n";
			noerror = 0;
		}

 
 
    // --- check if errors occurred ---
	if (noerror == 0) {
		alert(errormessage);
		return false;
	}


	else { 
		$('submit').disabled = false;
		return true;
	
	 }
}