var preloadFlag = false;

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

function preloadImages() {
	if (document.images) {
		im1 = newImage("/img/nav/home-on.png");
		im2 = newImage("/img/nav/about-on.png");
		im3 = newImage("/img/nav/finance-on.png");
		im4 = newImage("/img/nav/services-on.png");
		im5 = newImage("/img/nav/restructuring-on.png");
		im6 = newImage("/img/nav/careers-on.png");
		im7 = newImage("/img/bullet_nav-on.gif");
		im8 = newImage("/img/bullet_nav-off.gif");
		im9 = newImage("/img/bullet_navleft-on.gif");
		im10 = newImage("/img/bullet_navleft-off.gif");
	preloadFlag = true;
	}
}

// toggle visibility 
function toggleDescription( targetId ){
  if (document.getElementById){
  		target = document.getElementById( "desc"+targetId );
  			if (target.style.display == "none"){
  				target.style.display = "";
  			} else {
  				target.style.display = "none";
  			}
  	}
}