function getWindowHeight() {
var windowHeight=0,contentHeight=0;

if (typeof(window.innerHeight)=='number') {
windowHeight=window.innerHeight;
} else {
if (document.documentElement && document.documentElement.clientHeight) {
windowHeight=document.documentElement.clientHeight;


} else {
if (document.body&&document.body.clientHeight) {
windowHeight=document.body.clientHeight;

}
}
}

if(document.getElementById) {	//var offset = (p) ? 0 : 97;
	contentHeight = document.getElementById("content").offsetHeight+25; //+130
	if(contentHeight > windowHeight) document.getElementById("sidebar").style.height = contentHeight +'px';
	else document.getElementById("sidebar").style.height = windowHeight+'px'; //-97
} else if(document.all) {
	contentHeight = document.all.content.offsetHeight+25;
	if(contentHeight > windowHeight) document.all.sidebar.style.height = contentHeight +'px';
	else document.all.sidebar.style.height = windowHeight+'px';
}	//alert(contentHeight+'/'+windowHeight)
}

document.onload=getWindowHeight();
window.onresize=getWindowHeight;


// ajax post
var http_request = false;

function makePOSTRequest(url, parameters) {
	http_request = false;
	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
	
		if (http_request.overrideMimeType) {
			// set type accordingly to anticipated content type
			http_request.overrideMimeType('text/html');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	if (!http_request) {
		alert('Cannot create XMLHTTP instance');
		return false;
	}
	
	http_request.onreadystatechange = alertContents;
	http_request.open('POST', url, true);
	http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	http_request.setRequestHeader("Content-length", parameters.length);
	http_request.setRequestHeader("Connection", "close");
	http_request.send(parameters);
}

function alertContents() {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			ajax_post_result = http_request.responseText;
		}
	}
}

function set(args) {
	args+="&url="+document.location;
	makePOSTRequest('save.php', args);
}

var ajax_get_result;

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;
}