var imagetotal = 16;
var category = 'fishing';

var imagepath = 'photography/'+ category +'/images/';
var pagetotal = Math.ceil(imagetotal/4);

function view(page,image){
window.location= category +'.htm?page='+ page +'&image=' + image;
}

function enlarge(image){
window.location= 'enlarge_'+ category +'.htm?image=' + image;
}

function backtomain(image){
var thispage = Math.ceil((image*1)/4);
view(thispage,image)
}