var lastComp = "none";

function highlight(company, category, group, evt) {
//CHANGE LAST COMPANY IMAGE BACKGROUND TO NEUTRAL AND RESET CATEGORIES
if (lastComp != 'none') {
highlightReset();
}
//HIGHLIGHT CURRENT COMPANY AND POP-UP DESCRIPTION
var e = (window.event) ? window.event : evt;
var bkg = document.getElementById(company);
lastComp = company;
lastCat = category;
bkg.style.backgroundImage = "url(images/bkg_portfolio_"+category+".jpg)";
var popup = document.getElementById('portfoliopopup');
popup.innerHTML = '<br />'+PortfolioContent[company];
popup.style.visibility = 'visible';
popup.style.left = e.clientX+2+'px';
popup.style.top = e.clientY+2+'px';
popup.style.zIndex = 99;

//HIGHLIGHT APPROPRIATE CATEGORIES
if (category == 'enterpriseconsumer') {
var cat1 = document.getElementById('enterprise');
var cat2 = document.getElementById('consumer');
cat1.style.backgroundImage = "url(images/bkg_portfolio_enterprise.jpg)";
cat2.style.backgroundImage = "url(images/bkg_portfolio_consumer.jpg)";
cat1.style.color = "#FFFFFF";
cat2.style.color = "#FFFFFF";
}
else if (category == "mediaconsumer") {
var cat1 = document.getElementById('media');
var cat2 = document.getElementById('consumer');
cat1.style.backgroundImage = "url(images/bkg_portfolio_media.jpg)";
cat2.style.backgroundImage = "url(images/bkg_portfolio_consumer.jpg)";
cat1.style.color = "#FFFFFF";
cat2.style.color = "#FFFFFF";
}
else if (category == "mobileconsumer") {
var cat1 = document.getElementById('mobile');
var cat2 = document.getElementById('consumer');
cat1.style.backgroundImage = "url(images/bkg_portfolio_mobile.jpg)";
cat2.style.backgroundImage = "url(images/bkg_portfolio_consumer.jpg)";
cat1.style.color = "#FFFFFF";
cat2.style.color = "#FFFFFF";
}
else if (category == "mediamobile") {
var cat1 = document.getElementById('media');
var cat2 = document.getElementById('mobile');
cat1.style.backgroundImage = "url(images/bkg_portfolio_media.jpg)";
cat2.style.backgroundImage = "url(images/bkg_portfolio_mobile.jpg)";
cat1.style.color = "#FFFFFF";
cat2.style.color = "#FFFFFF";
}
else if (category == "enterprisemobile") {
var cat1 = document.getElementById('enterprise');
var cat2 = document.getElementById('mobile');
cat1.style.backgroundImage = "url(images/bkg_portfolio_enterprise.jpg)";
cat2.style.backgroundImage = "url(images/bkg_portfolio_mobile.jpg)";
cat1.style.color = "#FFFFFF";
cat2.style.color = "#FFFFFF";
}
else {
var cat = document.getElementById(category);
cat.style.backgroundImage = "url(images/bkg_portfolio_"+category+".jpg)";
cat.style.color = "#FFFFFF";
}

//HIGHLIGHT VERTICAL GROUP
var grp = document.getElementById(group);
grp.style.backgroundColor = "#d4dfe6";

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 cat1 = document.getElementById('consumer');
var cat2 = document.getElementById('enterprise');
var cat3 = document.getElementById('media');
var cat4 = document.getElementById('mobile');
cat1.style.backgroundImage = "none";
cat2.style.backgroundImage = "none";
cat3.style.backgroundImage = "none";
cat4.style.backgroundImage = "none";
cat1.style.color = "#333333";
cat2.style.color = "#333333";
cat3.style.color = "#333333";
cat4.style.color = "#333333";
}
var grp1 = document.getElementById('internet');
var grp2 = document.getElementById('software');
var grp3 = document.getElementById('networking');
var grp4 = document.getElementById('components');
var grp5 = document.getElementById('emerging');
grp1.style.backgroundColor = '#ebebeb';
grp2.style.backgroundColor = '#ebebeb';
grp3.style.backgroundColor = '#ebebeb';
grp4.style.backgroundColor = '#ebebeb';
grp5.style.backgroundColor = '#ebebeb';
var popup = document.getElementById('portfoliopopup');
popup.style.visibility = 'hidden';
}