function getStyleSheets() {
	if (!document.getElementsByTagName("link")) { return; }
	var links = document.getElementsByTagName("link");
	var count = 0;
	var stylesheetArray = new Array();
	for (var i=0; i<links.length; i++) {
		type = links[i].getAttribute("type");
		if (type=="text/css") {
			stylesheetArray[count] = links[i];
			count++;
			}
	}
	return stylesheetArray;
}

function setStyleSheet(title) {
	var stylesheets = getStyleSheets();
	for (var i=0; i<stylesheets.length; i++) {
		stylesheets[i].disabled = true;
		if (stylesheets[i].getAttribute("title") == title) {
			stylesheets[i].disabled = false;
		}
	}
}


window.onload = function() {
	setStyleSheet('screen');
}