function setupPortfolio() {
	if(!document.getElementsByTagName) return false;
	if(!document.getElementById) return false;
	if(!document.getElementById("u_portfolio")) return false;
	
	var portfolio = document.getElementById("u_portfolio");
	var p_links = portfolio.getElementsByTagName("a");
	
	for(var i=0;i<p_links.length;i++) {
		p_links[i].onclick = function() {
			showPic(this);
	
			return false;
		}
	}
};

function selectBtn(whichBtn) {
	var portfolio = document.getElementById("u_portfolio");
	var p_links = portfolio.getElementsByTagName("a");
	for(var i=0;i<p_links.length;i++) {
		if (whichBtn == p_links[i]) {
	 		p_links[i].setAttribute("class","a_active");		
			p_links[i].className = "a_active";		
		} else {
			p_links[i].setAttribute("class","");		
			p_links[i].className = "";		
		}
	}
	// set other buttons class to ""

}

function showPic(whichPic) {
	if(!document.getElementById("i_portfolio")) return false;
	
	var source = whichPic.getAttribute("href");
	var i_portfolio = document.getElementById("i_portfolio");
	selectBtn(whichPic);
	i_portfolio.setAttribute("src",source);
};