function addEvent(obj, evType, fn){
  if (obj.addEventListener){
     obj.addEventListener(evType, fn, true);
     return true;
  } else if (obj.attachEvent){
     var r = obj.attachEvent("on"+evType, fn);
     return r;
  } else {
     return false;
  }
 }

function InsertContent(tid) {
if(document.getElementById(tid).style.display == "none") {
	document.getElementById(tid).style.display = "";
	}
else {
	document.getElementById(tid).style.display = "none";
	}
}

homeOn = new Image(); homeOn.src = "/img/nav/home_on.gif";
homeOff = new Image(); homeOff.src = "/img/nav/home_off.gif";
homeOver = new Image(); homeOver.src = "/img/nav/home_over.gif";

newsOn = new Image(); newsOn.src = "/img/nav/news_on.gif";
newsOff = new Image(); newsOff.src = "/img/nav/news_off.gif";
newsOver = new Image(); newsOver.src = "/img/nav/news_over.gif";

portfolioOn = new Image(); portfolioOn.src = "/img/nav/portfolio_on.gif";
portfolioOff = new Image(); portfolioOff.src = "/img/nav/portfolio_off.gif";
portfolioOver = new Image(); portfolioOver.src = "/img/nav/portfolio_over.gif";

clientsOn = new Image(); clientsOn.src = "/img/nav/clients_on.gif";
clientsOff = new Image(); clientsOff.src = "/img/nav/clients_off.gif";
clientsOver = new Image(); clientsOver.src = "/img/nav/clients_over.gif";

indepthOn = new Image(); indepthOn.src = "/img/nav/indepth_on.gif";
indepthOff = new Image(); indepthOff.src = "/img/nav/indepth_off.gif";
indepthOver = new Image(); indepthOver.src = "/img/nav/indepth_over.gif";

aboutOn = new Image(); aboutOn.src = "/img/nav/about_on.gif";
aboutOff = new Image(); aboutOff.src = "/img/nav/about_off.gif";
aboutOver = new Image(); aboutOver.src = "/img/nav/about_over.gif";

contactOn = new Image(); contactOn.src = "/img/nav/contact_on.gif";
contactOff = new Image(); contactOff.src = "/img/nav/contact_off.gif";
contactOver = new Image(); contactOver.src = "/img/nav/contact_over.gif";

function swap(){
if (document.images){
for (var x=0;
x<swap.arguments.length;
x+=2) {
document[swap.arguments[x]].src = eval(swap.arguments[x+1] + ".src");
}
}
}