window.onload = function(){
	var speed = 150;
	opened = "";
	
	spis = document.getElementById("leftn");
	rrr = spis.getElementsByTagName("ul");
	
	lishki = spis.getElementsByTagName("li");
	for (i = 0; i < lishki.length; i++) {
		if (lishki[i].getElementsByTagName("ul")[0]) {
			
			lishki[i].onclick = function(){
				vz = this.getElementsByTagName("ul")[0];
				az = this.getElementsByTagName("a")[0];				
				
				if (vz.style.display != "none") {
					vz.style.display = "none";
					$(az).removeClass("active");							
				}
				else {
					if (opened != "") {
						$(vz).slideUp(speed);
					}
					$(vz).slideDown(speed);
					$(az).addClass("active");
					opened = vz;
				}
			}
		}
	}
	
	return false;
}