// JavaScript Document

function clearDefault (el) {
	if (el.defaultValue==el.value) el.value = ""
}

function resetDefault (el) {
	if (el.value == "") el.value = el.defaultValue
}

function checkForm (frm) {
	var emailRX = /^([\w]+)(.[\w]+)*@([\w]+)(.[\w]{2,3}){1,2}$/;
	var msg = "";
	var formID = frm.formID.value;
	if (frm.submit_type.value == "") {
		return false;
	} else if (frm.submit_type.value == "signup") {
		if (frm.name.value == frm.name.defaultValue) {
			msg += "Please enter your name.<br />";
		}
		if (emailRX.test(frm.email.value) != true) {
			msg += "Please enter a valid email.<br />";
		}
	} else if (frm.submit_type.value == "contact-us") {
		if (frm.name.value == frm.name.defaultValue) {
			msg += "Please enter your name.<br />";
		}
		if (emailRX.test(frm.email.value) != true) {
			msg += "Please enter a valid email.<br />";
		}
	} else if (frm.submit_type.value == "share_photo") {
		if (frm.name.value == frm.name.defaultValue) {
			msg += "Please enter your name.<br />";
		}
		if (emailRX.test(frm.email.value) != true) {
			msg += "Please enter a valid email.<br />";
		}
		if (frm.title.title == frm.title.defaultValue) {
			msg += "Please enter a title for your image.<br />";
		}
		if (frm.image.value == "") {
			msg += "Please choose the image you want to share.<br />";
		}
	}
	
	if(msg == "") {
		return true;
	} else {
		var messageID = "submit_message" + formID;
		document.getElementById(messageID).innerHTML = '<p>' + msg + '</p>';
		return false;
	}
}