var showblock=false;
var block_id='';
function clickitem(blockId){
	blockId = blockId+'sub';
	if(blockId!=block_id){
		if(block_id!='')
			document.getElementById(block_id).className = "treesubitem_off";
		document.getElementById(blockId).className = "treesubitem_on";
		showblock = true;
		block_id=blockId;
	}
	else{
		if(!showblock){
			 showblock = true;
			document.getElementById(blockId).className = "treesubitem_on";
		}
		else{
			 showblock = false;
			document.getElementById(blockId).className = "treesubitem_off";
			
		}
	}
}
function init_treemenu(id){
	var itemsel = id+'sub';
	var obj_arr = document.getElementById("treemenu").getElementsByTagName("ul");
	for (var i=0; i < obj_arr.length; i++){
		if(obj_arr[i].id != itemsel)
			obj_arr[i].className="treesubitem_off";
		else{
			block_id = itemsel;
			showblock = true;
			obj_arr[i].className="treesubitem_on";	
		}
	}
}