var http_request = new Array();var handled = new Array();var scanqueue = new Array();var i=1, maxedout=0, sq=-1, nextscan=-1, lastNextStart=0;
var inprogress=0;
var retry = 0;

var currdc = 0;
var dc = new Array();
dc[0] = "74.125.47.104"; // 	yw-in-f104.google.com
dc[1] = "72.14.209.104"; // 	bf-in-f104.google.com
dc[2] = "64.233.163.189"; // 	bs-in-f189.google.com
dc[3] = "72.14.235.184"; // 	mad01s03-in-f184.google.com
dc[4] = "209.85.135.17"; // 	mu-in-f17.google.com


function URLencode(sStr) {
	return escape(sStr).replace(/\+/g, '%2B').replace(/\"/g,'%22').replace(/\'/g, '%27').replace(/\&/g, '%26');
}

function makeRequest(url, i) {

	if (window.XMLHttpRequest) { // Mozilla, Safari, etc.

		http_request[i] = new XMLHttpRequest();

		if (http_request[i].overrideMimeType) {

			http_request[i].overrideMimeType('text/xml');

		}

	} else if (window.ActiveXObject) { // IE

		try {

			http_request[i] = new ActiveXObject("Msxml2.XMLHTTP");

		} catch (e) {

			try {

				http_request[i] = new ActiveXObject("Microsoft.XMLHTTP");

			}
			catch (e) {
			}

		}

	}

	if (!http_request[i]) {

		return false;

	}

	http_request[i].onreadystatechange = function(){handleResponse(i)};

	http_request[i].open('GET', url, true);

	http_request[i].send(null);

	return true;

}



function handleResponse(i){
	var tmplink, tmpanchor;

	if(http_request[i].readyState == 4){
		var resultsdiv = document.getElementById('resultsdiv');
		resultsdiv.style.display = "block";

		var xmldoc = http_request[i].responseXML;

		var ret = xmldoc.getElementsByTagName('scanresult').item(0);

		var errNum = ret.getElementsByTagName('errNum').item(0).firstChild.data;
		var errDesc = ret.getElementsByTagName('errDesc').item(0).firstChild.data;
		var thisdc = ret.getElementsByTagName('dc').item(0).firstChild.data;
		var thisdcName = ret.getElementsByTagName('dcName').item(0).firstChild.data;
		var thispage = Math.round(ret.getElementsByTagName('page').item(0).firstChild.data);
		var thisstart = ret.getElementsByTagName('start').item(0).firstChild.data;
		var domainIn = ret.getElementsByTagName('domainIn').item(0).firstChild.data;
		var domainChecked = ret.getElementsByTagName('domainChecked').item(0).firstChild.data;
		var kwd = unescape(ret.getElementsByTagName('kwd').item(0).firstChild.data);
		var found = Math.round(ret.getElementsByTagName('found').item(0).firstChild.data);
		var foundURL = ret.getElementsByTagName('foundURL').item(0).firstChild.data;
		var foundTitle = ret.getElementsByTagName('foundTitle').item(0).firstChild.data;
		var nextPageAvail = ret.getElementsByTagName('nextPageAvail').item(0).firstChild.data;
		var nextStart = ret.getElementsByTagName('nextStart').item(0).firstChild.data;

		if(errNum==4){ //sleep on it
			var phrase = URLencode(kwd);
			var callstr = 'scan(\''+ domainIn + '\', \'' + phrase + '\', ' + thispage + ')';
			setTimeout(callstr, 850);
			return true;
		}

		if(errNum==5){ //timeout out, retry
			var phrase = URLencode(kwd);
			retry++;
			scan(domainIn, phrase, thispage, retry);
			return true;
		}

		retry = 0;

		if(found>0){
			var thisResult, thisRank;
			thisResult = document.getElementById(thisdc);
			thisRank = document.getElementById(thisdc+'-rnk');
			var pos = ((thispage - 1) * 100) + found;
			thisResult.innerHTML = foundURL;
			thisRank.innerHTML = pos;
			if(currdc<5){
				currdc++;
				lastNextStart=0;
				scan(domainIn, kwd, 1);
			}
		}else if(nextPageAvail=='true' && nextStart!=lastNextStart && thispage<2){
			lastNextStart = nextStart;
			var phrase = URLencode(kwd);
			scan(domainIn, phrase, thispage + 1);
		}else{
			var thisResult, thisRank;
			thisResult = document.getElementById(thisdc);
			thisRank = document.getElementById(thisdc+'-rnk');
			thisResult.innerHTML = domainChecked;
			thisRank.innerHTML = "Not in top 200";
			if(currdc<5){
				currdc++;
				lastNextStart=0;
				scan(domainIn, kwd, 1);
			}
		}
	}else{

		//alert('There was a problem with the request. ReadyState:' + http_request[i].readyState);

	}

}


function startScan(){
	if(inprogress!=0){
		return false;
	}else{
		inprogress=1;
	}
	//call to fancy DHTML goes here
}

function scan(domain, phrase, page, retry){
	i++;
	phrase = URLencode(phrase)
	resdiv = document.getElementById(dc[currdc]);
	rnkdiv = document.getElementById(dc[currdc]+'-rnk');
	if(retry==undefined){
		resdiv.innerHTML = "{scanning page "+page+"}";
	}else{
		resdiv.innerHTML = "{scanning page "+page+" (retry #" + retry + ")}";
	}
	rnkdiv.innerHTML = "<img src=\"images/working.gif\">";
	if(i<=1400){
		makeRequest('gmdc-scan.php?dc='+dc[currdc]+'&domain='+domain+'&term='+phrase+'&page='+page, i);
	}else{
		alert(i);
		maxedout = 1;
	};
	return true;

}


String.prototype.trim = function(){
	return this.replace(/^\s+|\s+$/g,"");
}

function doform(){
	var term = document.getElementById("term").value;
	term = term.trim();
	var domainstr = document.getElementById("chkdomain").value;
	domainstr = domainstr.trim();
	if(term.length>2 && domainstr.length>5){
		var thereset = document.getElementById("reset-switch");
		thereset.style.display = "inline";
		var thetoolform = document.getElementById("toolform");
		thetoolform.style.display = "none";
		var theresultsdiv = document.getElementById("resultsdiv");
		theresultsdiv.style.display = "block";
		var theprogressdiv = document.getElementById("progress");
		theprogressdiv.style.display = "block";
		var thekwdspan = document.getElementById("checkkeywords");
		thekwdspan.innerHTML = term;
		var thedomainspan = document.getElementById("checkdomain");
		thedomainspan.innerHTML = domainstr;
		scan(domainstr, term, 1);
	}
}