function setStyle(obj){
	var objParent = obj.parentNode.parentNode; //alert(objParent.className);
	var childNodesLength = objParent.childNodes.length; //alert(childNodesLength);
	for(var i=0; i<childNodesLength; i++){
		var tmpObj = objParent.childNodes[i];
		if(tmpObj.childNodes.length>0){
			tmpObj.childNodes[0].className = "";
		}
	}
	obj.className = "list_selected";
}