var cookie_name = "israhit_style";

function setActiveStyleSheet(title) {
	var i, a, main;
	if (title.indexOf('style_')==-1) title = "style_" + title;
//	alert("cng style to: "+title);
	// disable all styles, except for the one we wish to activate
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
//			alert("style: "+a.getAttribute("title"));
			a.disabled = true;
			if (a.getAttribute("title") == title){
//				alert("act: "+ a.getAttribute("title") +" $$$");
				a.disabled = false;
			}
		}
	}
}

function getActiveStyleSheet() {
	var i, a;
	// get the currently active style
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
	}
	return '';
}

function getPreferredStyleSheet() {
	var i, a;
	// get the default style
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
	//	alert("checking link "+i+": "+a.getAttribute("rel"));
		if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title")) 
			return a.getAttribute("title");
	}
	return '';
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return '';
}

window.onload = function(e) {
//	alert(cookie_name);
	var cookie = readCookie(cookie_name);
//	alert(cookie);
	var title = (cookie!='' ? cookie : getPreferredStyleSheet());
//	alert(title);
	setActiveStyleSheet(title);
}

window.onunload = function(e) {
	var title = getActiveStyleSheet();
	createCookie(cookie_name, title, 365);
}