function wait_class () {
	var load = 0;
	var div ="";
	this.init = function () {
		div = document.createElement("div");
		div.style.cursor = "wait";
		div.style.width = "100%";
		div.style.height = "100%";
		div.style.position = "fixed";
		div.style.zindex = 50;
		div.style.top = "0px";
		div.style.left = "0px";
		document.body.appendChild(div);
	};
	this.addLoad = function (){
		load++;
		if (load == 1)
		{
			if (div != "")
				div.style.display = "";
		}
	};
	this.kilLoad = function (){
		load--;
		if (load == 0)
		{
			setTimeout (function () {
				if (load == 0)
				{
					if (div != "")
						div.style.display = "none";
				}
			}, 1000);
			
			
		}
	};
}
var wait = new wait_class();

function ajaxcall (url, poststring)
{
	this.get 	= function (ajaxobj)
	{
		if (window.XMLHttpRequest)
			var XHR = new XMLHttpRequest();
		else if (window.ActiveXObject)
			var XHR = new ActiveXObject("Microsoft.XMLHTTP");
		XHR.onreadystatechange = function()
		{
			if (XHR.readyState ==2)
			{
				wait.addLoad();
				ajaxobj.load(XHR);
			}
			if (XHR.readyState ==4)
			{
				wait.kilLoad();
				ajaxobj.onload(XHR);
			}
		};
		XHR.open("GET", url, true);
		XHR.send("");
	};
	this.post 	= function (ajaxobj)
	{
		if (window.XMLHttpRequest)
			var XHR = new XMLHttpRequest();
		else if (window.ActiveXObject)
			var XHR = new ActiveXObject("Microsoft.XMLHTTP");
		XHR.open("POST", url, true);
		XHR.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 
		XHR.onreadystatechange = function()
		{
			if (XHR.readyState ==2)
			{
				wait.addLoad();
				ajaxobj.load(XHR);
			}
			if (XHR.readyState ==4)
			{
				wait.kilLoad();
				ajaxobj.onload(XHR);
			}
		};
		
		XHR.send(poststring);
	};
	this.toJSON	= function (XHR)
	{
		var json = "json = " + XHR.responseText + ";";
		eval (json);
		return json;
	};
	this.load = function ()
	{ }
	this.onload = function ()
	{ }
	if (poststring == undefined)
		this.get(this);
	else
		this.post(this);
}

function sortArray (array, index, comma) {
    var sortFunction = function (a, b) {
          if (a[index]<b[index]) return -1;
          if (a[index]>b[index]) return 1;
          return 0;
    };
    
    var sortPriceFunction = function (a, b) {
        if (parseFloat(a[index]) < parseFloat(b[index])) return -1;
        if (parseFloat(a[index]) > parseFloat(b[index])) return 1;
        return 0;
    };
    if (comma === undefined ||
    	comma === false)
    	array.sort(sortFunction);
    else
    	array.sort(sortPriceFunction);
    return array;
}