/* This is solution for Internet Explorer that can not properly read document base. */
var shopBase = '';
/* maybe someday it will work... so far not allowed in MSIE */ /*
var resultIterator = document.evaluate('//base/@href', document, null, XPathResult.ANY_TYPE, null);
if (result = resultIterator.iterateNext())
	shopBase = result.nodeValue; */
var bases = document.getElementsByTagName("base");
shopBase = bases[0].getAttribute("href");