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 var 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 null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function hasClass (el, clss) {
	return ( 
		el.className && el.className.match(new RegExp("(^|\\s)"+clss+"(\\s|$)")) 
	) ? true : false;
}

function highlightBox(id) {
	id = id.substr(0, id.length - 1);
	if (el = document.getElementById(id + "a"))
		el.className = "hover";
	if (el = document.getElementById(id + "b"))
		el.className = "hover";
}

function dehighlightBox(id) {
	id = id.substr(0, id.length - 1);
	if (el = document.getElementById(id + "a"))
		el.className = "";
	if (el = document.getElementById(id + "b"))
		el.className = "";
}

function initBoxHighlights(id) {
	el = document.getElementById(id);
	if (!el) return false;
	trs = el.getElementsByTagName("table")[0].getElementsByTagName("tr");
	for (var i = 0; i < trs.length; i++) {
		if (hasClass(trs[i], "info2") || hasClass(trs[i], "info1")) {
			tds = trs[i].getElementsByTagName("td");
			for (var j = 0; j < tds.length; j++) {
				tds[j].onmouseover = new Function("highlightBox('" + tds[j].id + "')");
				tds[j].onmouseout = new Function("dehighlightBox('" + tds[j].id + "')");
			}
		}
	}
}