function iluminarEstrellas(estrella1, estrella2, estrella3, estrella4, estrella5, numEstrellas) {	
	
	//var zonaIzq = document.getElementById("zonaIzq");    
    //zonaIzq.style.height=(altoDesplazable-20) + "px";
	
	
	var est1 = document.getElementById(estrella1);
	var est2 = document.getElementById(estrella2);
	var est3 = document.getElementById(estrella3);
	var est4 = document.getElementById(estrella4);
	var est5 = document.getElementById(estrella5);
	
	est1.style.backgroundPosition="0px -15px";
	est2.style.backgroundPosition="0px -15px";
	est3.style.backgroundPosition="0px -15px";
	est4.style.backgroundPosition="0px -15px";
	est5.style.backgroundPosition="0px -15px";
	
	if (numEstrellas>0) {est1.style.backgroundPosition="0px 0px";}
	if (numEstrellas>1) {est2.style.backgroundPosition="0px 0px";}
	if (numEstrellas>2) {est3.style.backgroundPosition="0px 0px";}
	if (numEstrellas>3) {est4.style.backgroundPosition="0px 0px";}
	if (numEstrellas>4) {est5.style.backgroundPosition="0px 0px";}
	
	
}

function clickButton(e, buttonid){ 
    var bt = document.getElementById(buttonid);
    var KeyID = (window.event) ? event.keyCode : e.keyCode;
    
    if (bt){ 
        if (KeyID == 13){
            if (bt.click)
            {
                // IE
                bt.click();
            }
            else
            {
                // FireFox
                window.location.href = bt.href ;
            }
            return false; 
        }
    }
}