function emailinput_on()
{
	if(document.getElementById("email-addr").value=="Your email address")
	{
		document.getElementById("email-addr").value = "";
	}
}

function emailinput_off()
{
	if(document.getElementById("email-addr").value=="")
	{
		document.getElementById("email-addr").value = "Your email address";
	}
}

function validate_email()
{
	var alertbg = "#345f91";
	var okbg = "#ffffff";

	var email_regex = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,})+$/;

	if(!email_regex.test(document.getElementById("email-addr").value))
	{
		document.getElementById("email-addr").style.background = alertbg;
		document.getElementById("email-addr").focus();
		return false;
	}
	else
	{
		document.getElementById("email-addr").style.background = okbg;
		return true;
	}
}