// JavaScript Document
<!-- dd menu -->

var timeout         = 8000;
var closetimer		= 0;
var ddmenuitem      = 0;

// open hidden layer
function mopen(id)
{	
	// cancel close timer
	mcancelclosetime();

	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';

	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';

}
// close showed layer
function mclose()
{
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
}

// go close timer
function mclosetime()
{
	closetimer = window.setTimeout(mclose, timeout);
}

// cancel close timer
function mcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

// close layer when click-out
document.onclick = mclose; 
// -->

function button(img_name,img_src){
	document[img_name].src=img_src;
}
var swapimages = new Array()

	swapimages[0] = 'image/imageb.gif';
	swapimages[1] = 'image/imagec.gif';
	swapimages[2] = 'image/imaged.gif';
	swapimages[3] = 'image/imagee.gif';
	swapimages[4] = 'image/imagef.gif';
	swapimages[5] = 'image/imageg.gif';
	swapimages[6] = 'image/imagea.gif';
	

	var p = swapimages.length;
	
	function updateImage(){
    	whichImage = Math.round(Math.random()*(p-1));
		document.images["swap"].src = swapimages[whichImage];
		setTimeout("updateImage()",8000);
	}