var client;
	var level = 0;
	createClient();

	function createClient() {
		try {
			client = window.XMLHttpRequest ? new XMLHttpRequest() :	new ActiveXObject("Microsoft.XMLHTTP");
		} catch (e) {
			alert("Couldn't create the client... please contact info@europewebcompany.com");
		}
	}

	function callback() {
		if (client.readyState == 4) {
			if (client.status == 200) {
				if (client.responseText != ""){
					try{
                        getObject("loading").style.visibility = "hidden";
                        getObject("category"+level).disabled = false;
						if (client.responseText.length > 6){
							setChild(level, client.responseText);
                            decreaseMenu();
						}
						else {
							window.location = "https://www.europewebcompany.com/search.php?cat=" + client.responseText + getCategorieIds();
						}
					}
					catch(e){

					}
				}
				createClient();
			} else {
				alert("There was a problem retrieving the response:" +
					client.statusText);
				createClient();
			}
		}
	}

    function decreaseMenu(){
        var totalSize = getObject("category1").offsetWidth;
        for(i=2; i<= 4; i++){
            try{
                totalSize += getObject("category" + i).offsetWidth;
            }catch(e){}
        }
        
        if(totalSize > 600){
            for(i=1; i< 4; i++){
                if(getObject("category"+i).style.width == "")
                    getObject("category"+i).style.width = (getObject("category"+i).offsetWidth)-30;
            }
        }
    }

	
	function setChild(theLevel, theText) {
		var parent = getObject("categories");

		var newSpan = document.createElement('span');
		var spanIdName = 'category'+theLevel+'Span';
		newSpan.setAttribute('id',spanIdName);
		newSpan.innerHTML = theText;
		parent.appendChild(newSpan);
	}

	function getSubCategory(id){
        var chosenCat = id.value;
        if(isNaN(chosenCat))
            chosenCat=chosenCat.substring((chosenCat.indexOf("cat=")+4));
        if(chosenCat > 0)
            id.disabled = true;
		var tmpLevel = id.name.substring(8);
		if (tmpLevel <= level){
			cleanSubcategories(tmpLevel);
		}
		level = tmpLevel;
		if (chosenCat > 0){
            getObject("loading").style.visibility = "visible";
			client.onreadystatechange = callback;
			client.open("get","https://www.europewebcompany.com/getSubCategories.php?ID="+chosenCat+"&lvl="+level+"&date=" + new Date(),true);
			client.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT");
			client.send(null);
		}
        else if(chosenCat < 0)
            window.location = "https://www.europewebcompany.com/search2.php?cat=" + (chosenCat*-1) + getCategorieIds();
	}

	function cleanSubcategories(id){
		var error = 0;
		while (error == 0){
			try{
				var childnode=getObject("category"+id+"Span");
				getObject("categories").removeChild(childnode);
			}
			catch(es){
				error = 1;
			}
			id++;
		}
	}

	function getCategorieIds(){
		var error = 0;
		var id=1;
		var result = "";
		while (error == 0){
			try{
				var childnode=getObject("category"+id);
                var theValue = childnode.value;
                if(isNaN(theValue))
                    theValue=theValue.substring(theValue.indexOf("cat=")+4);
                if(theValue < 0)
                    theValue = 0;
				result += ("&lvl" + id + "=" + theValue)
			}
			catch(es){
				error = 1;
			}
			id++;
		}
		return result;
	}