imageresize = function() {

	var imgs = document.getElementsByTagName('img');
	for (i=0;i<imgs.length;i++) {
		if (imgs[i].className == 'resize') {
			imgs[i].onclick = function() {
				if(this.src.indexOf("-pieni") > -1) {
					this.src = this.src.replace('-pieni', '-iso');
				} else {
					this.src = this.src.replace('-iso', '-pieni');
				} 

			}
		}
	}
}

addOnloadEvent(imageresize);