if (document.getElementById){ //se confirma que el navegador soporta la obtencion del id de un elemento
document.write('<style type="text/css">\n')
document.write('.noview{display: none;}\n')
document.write('</style>\n')
}

function SwitchDisplay(obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
	if(el.style.display != "block"){
		el.style.display = "block";
	}else{
		el.style.display = "none";
		}
	}
}

function borrarseleccion(url){
	window.location=url+"&del=all";
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}