var currMenu = null;

function activarBoton(cell){
	if(currMenu == null){
		currMenu = document.getElementById('btnMenuHome');
	}	
	
	var btnMenu = new Object(currMenu);
	btnMenu = currMenu;
	
	var strClassName = btnMenu.className.replace("_sel","");

	btnMenu.className = strClassName;

	btnMenu.onmouseout = function(){
		setClassById(btnMenu,strClassName);
	};
	
	cell.className = 	cell.className.replace("_sel","")+"_sel";
	cell.onmouseout=null;
	
	currMenu = cell;
}