var preload_list = new Array("blank.jpg", "davih2.jpg", "mclea.jpg", "grifp.jpg", "richk.jpg", "blank.jpg", "joner.jpg", "richc.jpg", "2_1.jpg");
var path_to_images = "../images/ports/";

// preload (change path to images if necessary)
if (document.images) {
	var image_list = new Array();
	for (var preload_counter=0; preload_counter<preload_list.length; preload_counter++) {
  	image_list[preload_counter] = new Image(); 
		image_list[preload_counter].src = path_to_images + preload_list[preload_counter];	
  }
}

var swapTimer;
// delay before restoring original image onmouseout
var restore_delay = 800; // milliseconds
function swapImage(num) {
	if (swapTimer) clearTimeout(swapTimer);
	if (document.images) {
		document.swap.src = image_list[num].src;
	}
}

function restoreImg() {
	swapTimer = setTimeout("swapImage("+0+")",restore_delay);
}