function initPage()
{
	var _popup_link = document.getElementById("popup_link");
	var _popup_close = document.getElementById("popup_close");
	_popup_link.onclick = function()
	{
		if (document.body.className.indexOf("display") == -1 )
		document.body.className += " display";
	}
	_popup_close.onclick = function()
	{
		if (document.body.className.indexOf("display") != -1 )
		document.body.className = document.body.className.replace(new RegExp("display"),"");

	}
}

if (window.addEventListener)
	window.addEventListener("load", initPage, false);
else if (window.attachEvent)
	window.attachEvent("onload", initPage);