<!-- 
// Preload Images
currentpage = '';
galimage1 = new Image();
galimage1.src = 'images/nav-homeB.gif';
galimage2 = new Image();
galimage2.src = 'images/nav-tasmanianrainB.gif';
galimage3 = new Image();
galimage3.src = 'images/nav-ecotransB.gif';
galimage4 = new Image();
galimage4.src = 'images/nav-watertransportB.gif';
galimage5 = new Image();
galimage5.src = 'images/nav-theenvironmentB.gif';
galimage6 = new Image();
galimage6.src = 'images/nav-newsB.gif';
galimage7 = new Image();
galimage7.src = 'images/nav-contactusB.gif';


var galleryLargeImage;
// END Preload Images

function switchNav(navOption)
{
	var imgsrc = navOption.src;
	var regexp = '';

		if (imgsrc.indexOf('B.gif') != -1)
		{
			if (currentpage != navOption.id)
			{
				regexp = new RegExp("B.gif$", "g");
				navOption.src = navOption.src.replace(regexp, '.gif');
			}
		}else{
			regexp = new RegExp(".gif$", "g");
			navOption.src = navOption.src.replace(regexp, 'B.gif');
		}

}

function setNav()
{
	var siteurl = document.location.href;
	var urlarray = siteurl.split("/");
	var filename = urlarray[urlarray.length-1];
	var name = filename.split(".");
	if (name[0].length == 0) {name[0]='default';}
	currentpage = name[0];
	if (document.getElementById(currentpage))
	{
		switchNav(document.getElementById(name[0]));
	}
}
 -->