var myDialog;
function init() {
var Event = YAHOO.util.Event;
	Event.onDOMReady(function() { 
	var layout = new YAHOO.widget.Layout({ 
        units: [ 
	            { position: 'left', width: 200, resize: true,collapse:true,scroll: true, animate: true, body: 'menu'}, 
		    { position: 'top', body:'top1',height:20},
	            { position: 'center', body: 'body_content'},
		    { position: 'bottom', body: 'bottom1',height:30} 

	        ] 
	    }); 
	    layout.render(); 
	}); 

	var myMenu;
	window.onload = function() {
		myMenu = new SDMenu("my_menu");
		myMenu.init();
	};
	myDialog = new YAHOO.widget.Dialog("about",
				{ width : "300px", 
	              fixedcenter : true, 
	              visible : false,  
	              constraintoviewport : true });
}

function About() {
	
}
function nullFunction(){
	
}

function Navegador(){
    var nav = navigator.appName;
    return nav;
}