var cookie, title;

window.onunload = function(e) {
	title = getActiveStyleSheet();
	createCookie("style", title, 365);
}
function searchBox(type) {
	if (type == '1' && document.forms[0].q.value == 'Keyword') {
		document.forms[0].q.value = ''
	} 
	if (type == '0' && document.forms[0].q.value == '') {
		document.forms[0].q.value = 'Keyword'
	}
}
function dropdown(url) {
	if (url != '') {
		top.location.href = url;
	}
}
		
function setActiveStyleSheet(title) {
	var i, a, main;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
			a.disabled = true;
			if(a.getAttribute("title") == title) {
				a.disabled = false;
			}
		}
	}
	return false;
}

function getActiveStyleSheet() {
	var a;
	var title;
	for(var i = 0; i < document.getElementsByTagName('link').length; i++) {
		a = document.getElementsByTagName('link')[i];
		if(a.getAttribute('rel').indexOf('style') >= 0 && a.getAttribute('title') && !a.disabled) {
			return a.getAttribute("title");
		}
	}
	return null;
}

function getPreferredStyleSheet() {
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title") ) {
			return a.getAttribute("title");
		}
	}
	return null;
}

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 = "";
	}
	cookieValue = name+"="+value+expires+"; path=/";
	document.cookie = cookieValue;
}

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 null;
}

cookie = readCookie("style");
if (cookie != null && cookie != 'null') {
	title = cookie;
} else {
	title = getPreferredStyleSheet();
}
setActiveStyleSheet(title);

function toggleLogo(cmd) {
	if (cmd == 'highlight') {
		document.images['logo'].src = logoHighlight.src;
	} else {
		document.images['logo'].src = logoGray.src;
	}
}