var last = Array();
function on_over(obj){
	obj = getNextElement(obj.parentNode.childNodes[0]);
	
	last[0] = obj.style.backgroundImage;
	obj.style.backgroundImage= "url(/img/btn_left_over.gif)";
	
	obj = getNextElement(obj.nextSibling);
	
	last[1] = obj.style.backgroundColor;
	obj.style.backgroundColor = "#aea56a";
	
	obj = getNextElement(obj.nextSibling);
	
	last[2] = obj.style.backgroundImage;
	obj.style.backgroundImage= "url(/img/btn_right_over.gif)";
}
function on_out(obj){
	obj = getNextElement(obj.parentNode.childNodes[0]);
	obj.style.backgroundImage = last[0];
	obj = getNextElement(obj.nextSibling);
	obj.style.backgroundColor = last[1];
	obj = getNextElement(obj.nextSibling);
	obj.style.backgroundImage = last[2];
}
function getNextElement(node){
	while(node.nodeType !=1 && node != node.parentNode.lastChild){
		node = node.nextSibling;
	}
	return node;
}

var pre_load1= new Image();
pre_load1.src="/img/btn_left_over.gif";
var pre_load2= new Image();
pre_load2.src="/img/btn_right_over.gif";