// JavaScript Document

function encode(value) 
{
	var unencoded = value;
	return encodeURIComponent(unencoded);
}
function decode(value) 
{
	var encoded = value;
	return decodeURIComponent(encoded.replace(/\+/g,  " "));
}

function escapeHTML(str)
{
	var div = document.createElement('div');
	var text = document.createTextNode(str);
	div.appendChild(text);
	return div.innerHTML;
}


function is_email(email)
{
	var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	var address = email;
	if(reg.test(address) == false) 
	{
		return false;
	}
	else
	{
	   return true;
	}
}