function DisplayTreeContent(){
	    this.update = function(message) {
	        var clickedTreeNode = message.node;

			var docPane = dojo.widget.byId("docpane");
			var file = clickedTreeNode.object;
			if(file == 'RESUME_FLAG'){
				location.href='2011-Robert-Peterson-Resume.pdf';
			}else if(file == 'BLOG_FLAG'){
				location.href='../pebble';
			}else if(file == 'ABOUT_FLAG'){
				location.href='index.html';
			}else if(file == 'INTEREST_FLAG'){
				location.href='interests.html';
			}else if(file == 'PUB_FLAG'){
				location.href='publications.html';
			}
	    };
	}

	var displayer = new DisplayTreeContent();

	var nodeSelectionTopic = dojo.event.topic.getTopic("nodeSelected");
	nodeSelectionTopic.subscribe(displayer, "update");

	// display custom loadError or use built in
	// works best from live server instead of filesystem
	function contentLoadError(e){
		var chkbox = dojo.byId("defaultLoadError");
		if(chkbox && chkbox.checked){
			// use built in
			return;
		}
		e.preventDefault(); // or e.returnValue = false;
		var pane = dojo.widget.byId('docpane')
		pane.setContent("Custom Loaderror goes here<br/><img src='images/x.gif' style='float:left;'/> file not found");
		dialogHandler();// turn off loading dialog
	}

	// display custom Error(Content java/javascript eval error) or use built in method
	function contentExecError(e){
		var chkbox = dojo.byId("defaultEvalError");
		if(chkbox && chkbox.checked){
			// use built in
			return;
		}
		e.preventDefault();
		alert('Oops! error occured:'+arguments[0]);
	}

	// display loading dialog or use built in "Loading..." message
	function contentDownloadStart(e){
		var chkbox = dojo.byId("defaultLoadInfo");
		if(chkbox && chkbox.checked){
			// use built in
			return;
		}
		dialogHandler(e, true);
	}

	// show / hide loading dialog
	function dialogHandler(e, show){
		var dialog = dojo.widget.byId("statusDialog");
		if(show){
			e.preventDefault();
			dialog.show();
			return;
		}
		dialog.hide();
	}
	
	
	
	
	
	
	
//footer functions	
		
    function rightWrapper() {
   		mouseIsOverRightScroll = true;
   		moveRight();
   }
   
   function leftWrapper() {
   		mouseIsOverLeftScroll = true;
   		moveLeft();
   }
   
function moveRight() {
		var xdiv = dojo.byId('xdiv');
		xdiv.scrollLeft += 1;
		if(mouseIsOverRightScroll == true)
			dojo.lang.setTimeout(function(){moveRight();}, 1);
}

function moveLeft() {
		var xdiv = dojo.byId('xdiv');
		xdiv.scrollLeft -= 1;
		if(mouseIsOverLeftScroll == true)
			dojo.lang.setTimeout(function(){moveLeft();}, 1);
}