/*
FILE: javascript.js
*/
var xmlHttp;
var current_menu = "home";
var current_menu_text = "home_menu";

function switch_menu_arrow(which_item){

}

function get_content(which_content){


}

function changeText(new_menu){
//alert("Change Menu: " + which_menu);
var new_menu_text = new_menu + "_menu";
//Clear Old
document.getElementById(current_menu).style.visibility = "hidden";
document.getElementById(current_menu_text).style.color = "#404040";

//Set New
document.getElementById(new_menu).style.visibility = "visible";
document.getElementById(new_menu_text).style.color = "white";

//Reset Variables
current_menu = new_menu;
current_menu_text = new_menu_text;
	
var url = "./content/" + new_menu + ".html";
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null){
		alert ("Browser does not support HTTP Request")
		return
	}
	
	xmlHttp.onreadystatechange=changeTextHandler;
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null);

}

function changeTextHandler(){
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){ 
		document.getElementById("center_col").innerHTML=xmlHttp.responseText;
		//window.scrollTo(0,0);
	}

}

function GetXmlHttpObject()
{
	var xmlHttp=null;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch(e){ //Internet Explorer
		try{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}catch (e){
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}