var Ajax = new Object();
Ajax.checkAll = function()
{
	if(document.getElementById('cal_1').checked)
	{
		document.getElementById('cal_2').checked = true;
		document.getElementById('cal_3').checked = true;
		document.getElementById('cal_4').checked = true;
	}
	else
	{
		document.getElementById('cal_2').checked = false;
		document.getElementById('cal_3').checked = false;
		document.getElementById('cal_4').checked = false;
	}
}
Ajax.resetChecks = function()
{
	if(document.getElementById('cal_2').checked == false || document.getElementById('cal_3').checked == false || document.getElementById('cal_4').checked == false)
		document.getElementById('cal_1').checked = false;
}
Ajax.Request = function(url, callbackMethod)
{
	Ajax.request = Ajax.createRequestObject();
	Ajax.request.onreadystatechange = callbackMethod;
	var cal_1 = document.getElementById('cal_1').checked;
	var cal_2 = document.getElementById('cal_2').checked;
	var cal_3 = document.getElementById('cal_3').checked;
	var cal_4 = document.getElementById('cal_4').checked;
	if(cal_1)
		url += "&cal_1=" + cal_1;
	if(cal_2)
		url += "&cal_2=" + cal_2;
	if(cal_3)
		url += "&cal_3=" + cal_3;
	if(cal_4)
		url += "&cal_4=" + cal_4;
	Ajax.request.open("POST", url, true);
	Ajax.request.send(url);
}

Ajax.createRequestObject = function()
{
	var obj;
	if(window.XMLHttpRequest)
	{
		obj = new XMLHttpRequest();
	}
	else if(window.ActiveXObject)
	{
		obj = new ActiveXObject("MSXML2.XMLHTTP");
	}
	return obj;
}

Ajax.CheckReadyState = function(obj)
{
	var temp = document.getElementById('select_state');
	/*
	if(obj.readyState == 0) { document.getElementById('loading').innerHTML = "Sending Request..."; }
	if(obj.readyState == 1) { document.getElementById('loading').innerHTML = "Loading Cities..."; }
	if(obj.readyState == 2) { document.getElementById('loading').innerHTML = "Loading Cities..."; }
	if(obj.readyState == 3) { document.getElementById('loading').innerHTML = "Loading Cities..."; }
	*/

	if(obj.readyState == 0) { temp.options[0] = new Option("Loading Cities",""); }
	if(obj.readyState == 1) { temp.options[0] = new Option("Loading Cities",""); }
	if(obj.readyState == 2) { temp.options[0] = new Option("Loading Cities",""); }
	if(obj.readyState == 3) { temp.options[0] = new Option("Loading Cities","");  }
	if(obj.readyState == 4)
	{
		if(obj.status == 200)
		{
			//document.getElementById('loading').innerHTML = "";
			return true;
		}
		else
		{
			//document.getElementById('loading').innerHTML = "HTTP " + obj.status;
		}
	}
}