var cat = 'Uniform';
var cdn = 'http://cdn.content.atkingdom.com/tours/petites/01/images/';
function cat_change(){
if(cat=='Uniform'){document.getElementById('cat_name').innerHTML = 'Category: Schoolgirls 
'; category = 'Schoolgirls';}
if(cat=='Schoolgirls'){document.getElementById('cat_name').innerHTML = 'Category: Girl-Girl '; category = 'Girl-Girl';}
if(cat=='Girl-Girl'){document.getElementById('cat_name').innerHTML = 'Category: Boy-Girl '; category = 'Boy-Girl';}
if(cat=='Boy-Girl'){document.getElementById('cat_name').innerHTML = 'Category: Uniform '; category = 'Uniform';}
for(i=1; i<6; i++){
document.getElementById('ab_0'+i).src = cdn + category+i+'.jpg';
}
cat = category;
}