var popupWindow = {};

function openPopupWindow(name, uri, width, height, scrollbars)
{
	if(popupWindow[name] && !popupWindow[name].closed)
	{
		popupWindow[name].close();
	}
	popupWindow[name] = open(uri, name,
		  "width="  + width  + ","
		+ "height=" + height + ","
		+ "left="   + ((screen.width  - width)  / 2) + ","
		+ "top="    + ((screen.height - height) / 2) + ","
		+ "location=no,menubar=no,resizable=no,scrollbars=" + (scrollbars ? "yes" : "no") + ",status=no,toolbar=no");
}

onunload = function()
{
	for(var i in popupWindow)
	{
		popupWindow[i].close();
	}
};

onload = function()
{
	if(document.all && navigator.userAgent.indexOf("Opera") == -1)
	{
		if(document.getElementsByTagName("body")[0].className == "main")
		{
			document.getElementsByTagName("body")[0].className = "main_ie";
		}
	}
};