function initPage()
{
	var nav = document.getElementById('nav');
	if(nav)
	{
		var navs = nav.getElementsByTagName("a");
		for(var i=0; i < navs.length; i++)
		{
			_id = navs[i].parentNode.id;
			if(_id != "")
			{
				navs[i].onmouseover = function()
				{
					_img = document.getElementById('img-' + this.parentNode.id);
					if(_img)
					{
						hide_all();
						_img.style.display = '';
					}
				}
			}
		}		
	}
}

function hide_all()
{
	var _img = document.getElementById('image-container');
	if(_img)
	{
		var _imgs = _img.getElementsByTagName("img");
		for(var i=0; i < _imgs.length; i++)
		{
			_imgs[i].style.display = "none";
		}	
	}
}


if (window.attachEvent){
	window.attachEvent("onload", initPage);
	}
else if (window.addEventListener){
	window.addEventListener("load", initPage, false);
	}