function changeImages() {
	if (document.images ) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

function noCacheURL(url){
	return url + "?dt=" + (new Date()).getMilliseconds();
}

$(document).ready(function() {
	document.body.innerHTML = document.body.innerHTML.replace(/(\.pdf)\??([^ "]*)/ig, "$1?" + (new Date()).getTime() + "&$2");
});