d = document;

window.onload = function() {
	preparePortfolio()

}

function preparePortfolio() {
	
	var nav = d.getElementById('examplesNav');
	
	if (nav) {
	var a = nav.getElementsByTagName('a');
	
	for (i=0; i<a.length; i++) {
		a[i].onclick = function(){swapImg(this.href,this);return false;}
		}	
	} else {return false;}

}

function swapImg(file,link) {
	var exampleImg = d.getElementById('exampleImg');
	exampleImg.setAttribute("src",file);
	var ul = d.getElementById('examplesNav');
	var a = ul.getElementsByTagName('a');
	
	for (var i=0; i < a.length; i++) {
	a[i].className="";
};
	link.className="current";	
}