/* tree表示
 @param id 表示するdivのid
 @param blank リンクのターゲットtrueだとblank(デフォルトfalse)
================================================== */
tree = function(id,blank) {
	if(!$(id))return;
	if(blank == undefined)modal = false;
	this.tree = new YAHOO.widget.TreeView(id);
	this.mkTreeByArray = function (treeData,treeNode){
		if(!treeNode)treeNode = this.tree.getRoot();
		for(var i=0;i<treeData.length;i++){
			if(!(treeData[i][0]=="_open"||treeData[i][0]=="_close")){
				var tmpNode = new YAHOO.widget.TextNode("" + treeData[i][0],treeNode, false);
				if(typeof treeData[i][1] == "string"){
					tmpNode.href= treeData[i][1];
					if(blank)tmpNode.target= "sample";
				}
				if(typeof treeData[i][1] == "object"){
					if(treeData[i][1][0]=="_open")tmpNode.expand();
					this.mkTreeByArray(treeData[i][1],tmpNode);
				}
			}
		}
		this.tree.draw();
	}
}