function switchAd() {
try{ 
   
   
   
   if ( document.forms.form1.listaimagenes.value!=''){

	var cad = document.forms.form1.listaimagenes.value;
		
	var src = cad.split(',');
	var n=(ct+1)%src.length;
	if (ads[n] && (ads[n].complete || ads[n].complete==null)) {
		document["Ad_Image"].src = ads[ct=n].src;

	}
	ads[n=(ct+1)%src.length] = new Image;
	ads[n].src = src[n];
}



if ( document.forms.form1.listaimagenes3.value!=''){

	var cad2 = document.forms.form1.listaimagenes3.value;
		
		
	var src2 = cad2.split(',');
	var n2=(ct2+1)%src2.length;
	if (ads2[n2] && (ads2[n2].complete || ads2[n2].complete==null)) {
		document["Ad_Image2"].src = ads2[ct2=n2].src;

	}
	ads2[n2=(ct2+1)%src2.length] = new Image;
	ads2[n2].src = src2[n2];
}
   
   
   
}catch(e){ 
   //alert('el campo '+c+' no existe!'); 
}  

	setTimeout("switchAd()",duration*1000);

}

function doLink(){
location.href = url[ct];
} onload = function(){
if (document.images)
switchAd();
}