a1=new Image; a1.src="/images/u_av.gif";
a2=new Image; a2.src="/images/u_ptv.gif";
a3=new Image; a3.src="/images/u_lcd.gif"; 
a4=new Image; a4.src="/images/u_com.gif";
a5=new Image; a5.src="/images/u_acc.gif";
a6=new Image; a6.src="/images/u_acu.gif";	
a7=new Image; a7.src="/images/u_pro.gif";	

function onover (img) {
	document.images[img].src = "/images/a_" + img + ".gif";
}

function ondown (img) {
	document.images[img].src = "/images/u_" + img + ".gif";
}

function show_cat(level,id) {
	JsHttpRequest.query(
		'/req/module/common/show_' + level + '.php', 
		{'id': id},
		function(result, errors) {
			document.getElementById("navigator").innerHTML = result["res"];
		},
		false 
	);
}

function change_num(user,id,direction) {
	JsHttpRequest.query(
		'/req/module/common/change_num.php', 
		{'id': id,
		'direction': direction,
		'user': user
		},
		function(result, errors) {
			price = parseInt(document.getElementById(id + "sum").innerHTML) / parseInt(document.getElementById(id + "num").innerHTML);
			if (direction=="inc") {
				document.getElementById(id + "num").innerHTML = result["res"];
				document.getElementById(id + "sum").innerHTML = parseInt(document.getElementById(id + "sum").innerHTML) + price;
				document.getElementById("sum").innerHTML = parseInt(document.getElementById("sum").innerHTML) + price;		
			}
			else if (parseInt(document.getElementById(id + "num").innerHTML)>0)	{
				document.getElementById(id + "num").innerHTML = result["res"];
				document.getElementById(id + "sum").innerHTML = parseInt(document.getElementById(id + "sum").innerHTML) - price;
				document.getElementById("sum").innerHTML = parseInt(document.getElementById("sum").innerHTML) - price;		
				
			}
		},
		true
	);
}