// JavaScript Document
function TamVentana() {
    var Tamanyo = [0, 0];
    if (typeof window.innerWidth != 'undefined'){
        Tamanyo = [
        window.innerWidth,
        window.innerHeight
        ];
    }else if (typeof document.documentElement != 'undefined' && typeof document.documentElement.clientWidth !='undefined' && document.documentElement.clientWidth != 0){
    Tamanyo = [
        document.documentElement.clientWidth,
        document.documentElement.clientHeight
        ];
    }else{
        Tamanyo = [
            document.getElementsByTagName('body')[0].clientWidth,
            document.getElementsByTagName('body')[0].clientHeight
        ];
    }
    return Tamanyo;
}

function busqueda_avanzada(capa){
	var Tam = TamVentana();
	capa.style.left = ((Tam[0]-538)/2) + "px";
	capa.style.top = ((Tam[1]-200)/2) + "px";
	capa.style.visibility = "visible";
}

function desaparece(capa){
	capa.style.visibility = "hidden";
}