function oculta_menus(){
	
	subsecciones=getElementsByClass("sublista");
	i=0;
	for (i;i<eval(subsecciones.length);i++) {
		subsecciones[i].style.display= "none";
	}
}

function despliega(seccion){
  var submenu = document.getElementById(seccion);
    if(submenu.style.display == "none"){
      submenu.style.display = "block";
    }
    else{
      submenu.style.display = "none";
    }
}


function alerta(e){
	e.target.className = "seleccionado";	
}
function desalerta(e){
	e.target.className = " ";	
}

function alerta_IE()
{
    event.srcElement.className = "seleccionado";
}
function desalerta_IE()
{
    event.srcElement.className = " ";
}

function efectos(){
	
	$$('input').each(function(item){
	
		if (item.addEventListener){  // W3C DOM
			item.addEventListener('focus',alerta,false);
			item.addEventListener('blur',desalerta,false);
		}    
		else if (item.attachEvent) { // IE DOM
			 item.attachEvent('onfocus', alerta_IE);
			 item.attachEvent('onblur', desalerta_IE);
			 
		}
		else throw 'No es posible añadir evento';		
	
	});
		
	$$('textarea').each(function(item){
	
		if (item.addEventListener){  // W3C DOM
			item.addEventListener('focus',alerta,false);
			item.addEventListener('blur',desalerta,false);
		}    
		else if (item.attachEvent) { // IE DOM
			 item.attachEvent('onfocus', alerta_IE);
			 item.attachEvent('onblur', desalerta_IE);
			 
		}
		else throw 'No es posible añadir evento';		
	
	});
	/*
	var theCookies = Cookie.parse( document );
	
	if( theCookies )
	{
		for( var i in theCookies )
		{
			var aCookie = theCookies[i];
			//alert(aCookie.get());
			//alert(aCookie.name);
			//alert(aCookie.get());
			if(aCookie.name == 'font_size') {
				$('body').style.fontSize = aCookie.get()+'px';
			}
			if(aCookie.name == 'web_size') {
				$('web').style.width = aCookie.get()+'px';
				$('footer_content').style.width = aCookie.get()+'px';
				//$('body').style.width = aCookie.get()+'px';
				//alert(aCookie.get());
			}
		}
	}
	*/
}




function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}