window.onload=function(){
if(!document.getElementById || !document.getElementsByTagName) return;
links=document.getElementById("minipics").getElementsByTagName("a");
for(i=0;i<links.length;i++)
    links[i].onclick=function(){Show(this);return(false)}
}

function Show(obj){
bigimg=document.getElementById("bigimage");
bigimg.src=obj.getAttribute("href");
smallimg=obj.getElementsByTagName("img")[0];
t=document.getElementById("titolo");
t.removeChild(t.lastChild);
t.appendChild(document.createTextNode(smallimg.title));
}

function img_rid(self, largh, alt) {
var largh_or = self.width;
var alt_or = self.height;
if( (largh_or > largh) || (alt_or > alt) ) {

// se è orrizontale
if(largh_or >= alt_or) {
var alt_new = largh * alt_or / largh_or;
self.width = largh;
self.height = alt_new;
}
// se è verticale
else if(alt_or > largh_or) {
var largh_new = largh_or * alt / alt_or;
self.width = largh_new;
self.height = alt;
}
}
}