/** Code by www.labsmedia.com */
/** modified by Song Jun */
function catchClickHeat(e) {
	//alert("catch");
	try {
		showClickHeatDebug("Gathering click data...");
		if (clickHeatQuota == 0) {
			showClickHeatDebug("Click not logged: quota reached");
			return true;
		}
		/*
		if (clickHeatGroup == "") {
			showClickHeatDebug("Click not logged: group name empty (clickHeatGroup)");
			return true;
		}
		*/
		if (e == undefined) {
			e = window.event;
			c = e.button;
			element = e.srcElement;
		} else {
			c = e.which;
			element = null;
		}
		if (c == 0) {
			showClickHeatDebug("Click not logged: no button pressed");
			return true;
		}
		if (element != null && element.tagName.toLowerCase() == "iframe") {
			if (element.sourceIndex == clickHeatLastIframe) {
				showClickHeatDebug("Click not logged: same iframe (happens when a click on iframe occured opening a popup and popup is closed)");
				return true;
			}
			clickHeatLastIframe = element.sourceIndex;
		} else {
			clickHeatLastIframe = -1;
		}
		var x = e.clientX;
		var y = e.clientY;
		var w = clickHeatDocument.clientWidth != undefined ? clickHeatDocument.clientWidth : window.innerWidth;
		var h = clickHeatDocument.clientHeight != undefined ? clickHeatDocument.clientHeight : window.innerHeight;
		var scrollx = window.pageXOffset == undefined ? clickHeatDocument.scrollLeft : window.pageXOffset;
		var scrolly = window.pageYOffset == undefined ? clickHeatDocument.scrollTop : window.pageYOffset;

		//alert(x);
		//alert(y);
		//alert(w);
		//alert(h);
		//alert(scrollx);
		//alert(scrolly);


		if (x > w || y > h) {
			showClickHeatDebug("Click not logged: out of document (should be a click on scrollbars)");
			return true;
		}
		clickTime = new Date();
		if (clickTime.getTime() - clickHeatTime < 1000) {
			showClickHeatDebug("Click not logged: at least 1 second between clicks");
			return true;
		}
		clickHeatTime = clickTime.getTime();
		if (clickHeatQuota > 0) {
			clickHeatQuota = clickHeatQuota - 1;
		}
		params = "p=" + escape(pageUrl) + "&g=" + clickHeatGroup + "&x=" + (x + scrollx) + "&y=" + (y + scrolly) + "&w=" + w + "&h=" + h + "&b=" + clickHeatBrowser + "&c=" + c + "&random=" + Date();
		showClickHeatDebug("Ready to send click data...");
		var sent = false;
		if (clickHeatServer.substring(0, 4) != "http") {
			var xmlhttp = false;
			try {
				xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
			}
			catch (e) {
				try {
					xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
				}
				catch (oc) {
					xmlhttp = null;
				}
			}
			if (!xmlhttp && typeof XMLHttpRequest != undefined) {
				xmlhttp = new XMLHttpRequest();
			}
			/*
			if (xmlhttp) {
				if (clickHeatDebug == true) {
					xmlhttp.onreadystatechange = function () {
						if (xmlhttp.readyState == 4) {
							if (xmlhttp.status == 200) {
								showClickHeatDebug("Click recorded at " + clickHeatServer + " with the following parameters:<br />x=" + (x + scrollx) + " (" + x + "px from left+" + scrollx + "px of horizontal scrolling)<br />y=" + (y + scrolly) + " (" + y + "px from top+" + scrolly + "px of vertical scrolling)<br />width=" + w + "<br />browser=" + clickHeatBrowser + "<br />click=" + c + "<br />site=" + clickHeatSite + "<br />group=" + clickHeatGroup + "<br /><br />Server answer: " + xmlhttp.responseText);
							} else {
								if (xmlhttp.status == 404) {
									showClickHeatDebug("click.php was not found at: " + (clickHeatServer != "" ? clickHeatServer : "/clickheat/click.php") + " please set clickHeatServer value");
								} else {
									showClickHeatDebug("click.php returned a status code " + xmlhttp.status + " with the following error: " + xmlhttp.responseText);
								}
							}
						}
					};
				}
				xmlhttp.open("GET", clickHeatServer + "?" + params, true);
				xmlhttp.setRequestHeader("Connection", "close");
				xmlhttp.send(null);
				sent = true;
			}
			*/
		}
		if (sent == false) {
			if (clickHeatDebug == true) {
				showClickHeatDebug("Click recorded at " + clickHeatServer + " with the following parameters:<br />x=" + (x + scrollx) + " (" + x + "px from left+" + scrollx + "px of horizontal scrolling)<br />y=" + (y + scrolly) + " (" + y + "px from top+" + scrolly + "px of vertical scrolling)<br />width=" + w + "<br />browser=" + clickHeatBrowser + "<br />click=" + c + "<br />site=" + clickHeatSite + "<br />group=" + clickHeatGroup + "<br /><br />Server answer:<br />" + "<iframe src=\"" + clickHeatServer + "?" + params + "\" width=\"400\" height=\"30\"></iframe>");
			} else {
				var clickHeatImg = new Image();
				clickHeatImg.src = clickHeatServer + "?" + params;
				//alert(clickHeatImg.src);
			}
		}
	}
	catch (e) {
		showClickHeatDebug("An error occurred while processing click (Javascript error): " + e.message);
	}
	return true;
}
var clickHeatGroup = "";
var clickHeatSite = "";
var clickHeatServer = "http://tongji.starlott.com/clickheat/click.do";
var clickHeatLastIframe = -1;
var clickHeatTime = 0;
var clickHeatQuota = -1;
var clickHeatBrowser = "";
var clickHeatDocument = "";
//var clickHeatDebug = (window.location.href.search(/debugclickheat/) != -1);
var clickHeatDebug = false;
var pageUrl = "";
function initClickHeat() {
	pageUrl = window.location.href;

	var urlIndex = pageUrl.indexOf("#");
	if(urlIndex > 0) pageUrl = pageUrl.substr(0,urlIndex);

	if (clickHeatDebug == true) {
		document.body.innerHTML = document.body.innerHTML + "<div id=\"clickHeatDebuggerDiv\" style=\"padding:5px;display:none;position:absolute;top:10px;left:10px;border:1px solid #888;background-color:#eee;z-index:99;\"><strong>ClickHeat debug: <a href=\"#\" onmouseover=\"document.getElementById('clickHeatDebuggerDiv').style.display='none';return false\">Rollover to close</a></strong><br /><br /><span id=\"clickHeatDebuggerSpan\"></span></div>";
	}
	/*
	if (clickHeatGroup == "" || clickHeatServer == "") {
		showClickHeatDebug("ClickHeat NOT initialised: either clickHeatGroup or clickHeatServer is empty");
		return false;
	}
	domain = window.location.href.match("/http://[^/]+//");
	if (domain != null && clickHeatServer.substring(0, domain[0].length) == domain[0]) {
		clickHeatServer = clickHeatServer.substring(domain[0].length - 1, clickHeatServer.length);
	}
	*/
	if (typeof document.onmousedown == "function") {
		currentFunc = document.onmousedown;
		document.onmousedown = function (e) {
			catchClickHeat(e);
			return currentFunc(e);
		};
	} else {
		document.onmousedown = catchClickHeat;
	}
	iFrames = document.getElementsByTagName("iframe");
	for (i = 0; i < iFrames.length; i++) {
		if (typeof iFrames[i].onfocus == "function") {
			currentFunc = iFrames[i].onfocus;
			iFrames[i].onfocus = function (e) {
				catchClickHeat(e);
				return currentFunc(e);
			};
		} else {
			iFrames[i].onfocus = catchClickHeat;
		}
	}
	clickHeatDocument = document.documentElement != undefined && document.documentElement.clientHeight != 0 ? document.documentElement : document.body;
	var b = navigator.userAgent != undefined ? navigator.userAgent.toLowerCase().replace(/-/g, "") : "";
	clickHeatBrowser = b.replace(/iceweasel/, "firefox").replace(/^.*(firefox|kmeleon|safari|msie|opera).*$/, "$1");
	if (b == clickHeatBrowser || clickHeatBrowser == "") {
		clickHeatBrowser = "unknown";
	}
	showClickHeatDebug("ClickHeat initialised with:<br />site=" + clickHeatSite + "<br />group=" + clickHeatGroup + "<br />server=" + clickHeatServer + "<br />quota=" + (clickHeatQuota == -1 ? "unlimited" : clickHeatQuota) + "<br /><br />browser=" + clickHeatBrowser);
}
function showClickHeatDebug(str) {
	if (clickHeatDebug == true) {
		document.getElementById("clickHeatDebuggerSpan").innerHTML = str;
		document.getElementById("clickHeatDebuggerDiv").style.display = "block";
	}
}