var rotate_delay =2000; // delay in milliseconds 5000 = 5 secs;
current = 0;
function next() {
if (document.slideform.slide[current+1]) {
document.images.show.src =document.slideform.slide[current+1].value;
document.slideform.slide.selectedIndex =++current;
   }
else first();
}
function previous() {
if (current-1 >= 0) {
document.images.show.src =document.slideform.slide[current-1].value;
document.slideform.slide.selectedIndex =--current;
   }
else last();
}
function first() {
current = 0;
document.images.show.src =document.slideform.slide[0].value;
document.slideform.slide.selectedIndex =0;
}
function last() {
current =document.slideform.slide.length-1;
document.images.show.src =document.slideform.slide[current].value;
document.slideform.slide.selectedIndex =current;
}
function ap(text) {
document.slideform.slidebutton.value =(text == "Parar") ? "Empezar" : "Parar";
rotate();
}
function change() {
current =document.slideform.slide.selectedIndex;
document.images.show.src =document.slideform.slide[current].value;
}
function rotate() {
if (document.slideform.slidebutton.value 

== "Parar") {
current = (current ==document.slideform.slide.length-1) ? 0 : 

current+1;
document.images.show.src =document.slideform.slide[current].value;
document.slideform.slide.selectedIndex =current;
window.setTimeout("rotate()", 

rotate_delay);
   }
}
function formHandler(form){
var URL = document.form.site.options[document.form.site.selectedIndex].value;
window.location.href = URL;
}