number_of_sponsors=3;

var sctr=0;
var halt=0;
var isn=new Array();
for (i=0;i<number_of_sponsors;i++){
 isn[i]=new Image();
}
// archivos de BANNERS
isn[0].src="images/cuadro/mini_soja.jpg";
isn[1].src="images/cuadro/mini_maiz.jpg";
isn[2].src="images/cuadro/mini_trigo.jpg";


// URLs de links
var durl=new Array();

durl[0]="images/cuadro/amp_soja.jpg";
durl[1]="images/cuadro/amp_maiz.jpg";
durl[2]="images/cuadro/amp_trigo.jpg";


function rotateIt(){
    if (halt!=1){
        sctr++;
        if (sctr>number_of_sponsors-1){
            sctr=0;
        }
        document.sponsor.src=isn[sctr].src;
        document.sponsor.alt="Haga click para Ampliar";
        setTimeout("rotateIt()",2000);
    }
}

function doIt(){
   window.open(durl[sctr],'_blank','menubar=0,scrollbars=no,toolbar=0,status=0,location=0,resizable=0,top=0,left=0,height=550,width=810');
}

function dispIt(){
   parent.window.status=durl[sctr];
 }
function dispnotIt(){
   parent.window.status="";
 }