var jah_inuse = new Array();
var jah_queue = new Array();
var jah_busy = new Array();

function jah(url,target) {
	if(jah_inuse[0] == 1){
		jah_put_in_queue(url,target);
	}else{
		// native XMLHttpRequest object
		document.getElementById('JahStatus').innerHTML = 'loading...';
		jah_inuse[0]=1;
		jah_busy[0] = url+"||"+target;
		if (window.XMLHttpRequest) {
			req = new XMLHttpRequest();
			req.onreadystatechange = function() {jahDone(target);};
			req.open("GET", url, true);
			req.send(null);
		// IE/Windows ActiveX version
		} else if (window.ActiveXObject) {
			req = new ActiveXObject("Microsoft.XMLHTTP");
			if (req) {
				req.onreadystatechange = function() {jahDone(target);};
				req.open("GET", url, true);
				req.send();
			}
		}
	}
}    

function jahDone(target) {
    // only if req is "loaded"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
            results = req.responseText;
			document.getElementById(target).innerHTML = results;
			document.getElementById('JahStatus').innerHTML = '';
        } else {
		document.getElementById(target).innerHTML="jah error: " + req.statusText;
		document.getElementById('JahStatus').innerHTML = "jah error";
        }
		jah_inuse[0]=0;
		jah_busy[0] = "";
    }
}

function jah_put_in_queue(url,target){
	if(!in_array(jah_queue,url+"||"+target) && jah_busy[0]!=url+"||"+target/* ++ */ && !array_box(target) && !jah_busy_box(target)/* ++ */){
		document.getElementById('JahStatus').innerHTML = 'pre-loading...';
		jah_queue[jah_queue.length]=url+"||"+target
		if(jah_queue.length > 0){
			jah_check_queue()
		}
	}
}
function jah_check_queue(){
	if(jah_inuse[0] == 0 && jah_queue.length > 0){
		var data = jah_queue[jah_queue.length-1].split("||"); 
		jah(data[0],data[1],data[2]);
		jah_queue.pop()
		if(jah_queue.length < 1){
			clearTimeout(jah_timing)
		}
	}
	jah_timing = setTimeout("jah_check_queue()", 1)
}
function in_array(array,string){
	for(i=0;i<array.length;i++){
		if(array[i] == string){
			return 1;
		}
	}
}
// only for checking that something for 1  box won't be loaded 2 different things at 1 time
// this is a control, so when the internet connection is slow and it takes a while to load, they won't open a 2nd thing
function array_box(string){
	for(i=0;i<jah_queue.length;i++){
		var data = jah_queue[i].split("||"); 
		if(data[1] == string){
			return 1;
		}
	}
}
function jah_busy_box(string){
	var data = jah_busy[0].split("||"); 
	if(data[1] == string){
		return 1;
	}
}
// ----------------------------------------------------------------------------------------------------------------------------