var lastComp = "none";

function highlight(company, category, group, evt) {
//CHANGE LAST COMPANY IMAGE BACKGROUND TO NEUTRAL AND RESET CATEGORIES
if (lastComp != 'none') {

var bkg = document.getElementById(lastComp+'div');

if (document.getElementById('portfoliopopup')) {
var popup = document.getElementById('portfoliopopup');
bkg.removeChild(popup);
}
highlightReset();
}
//HIGHLIGHT CURRENT COMPANY AND POP-UP DESCRIPTION
var bkg = document.getElementById(company);
var div = document.getElementById(company+'div')
lastComp = company;
lastCat = category;
html = div.innerHTML;
div.innerHTML = html + '<div id="portfoliopopup"></div>';
bkg.style.backgroundImage = "url(images/bkg_portfolio_consumer.jpg)";
var popup = document.getElementById('portfoliopopup');
popup.innerHTML = '<br />'+PortfolioContent[company];
popup.style.visibility = 'visible';
w = parseFloat(bkg.offsetWidth);
h = parseFloat(bkg.offsetHeight);
popup.style.left = (parseFloat(w) - (w*.3)) + "px";
popup.style.top = (parseFloat(h) - 15) + "px";
popup.style.zIndex = 999;



return lastComp;
}

//RESET BACKGROUND IMAGES, CATEGORIES AND HIDE POPUP
function highlightReset() {
if (lastComp != 'none' && lastComp != null) {
document.getElementById(lastComp).style.backgroundImage = "url(images/bkg_portfolio_neutral.jpg)";
var bkg = document.getElementById(lastComp+'div');
if (document.getElementById('portfoliopopup')) {
var popup = document.getElementById('portfoliopopup');
bkg.removeChild(popup);
}
}

}