// preload navigation images:

        if (document.images) {

		navtab1_on = new Image();
                navtab1_on.src = "images/navtab1_on.gif";
                navtab1_off = new Image();
                navtab1_off.src = "images/navtab1_off.gif";
                
                navtab2_on = new Image();
		navtab2_on.src = "images/navtab2_on.gif";
		navtab2_off = new Image();
                navtab2_off.src = "images/navtab2_off.gif";
                
                navtab3_on = new Image();
		navtab3_on.src = "images/navtab3_on.gif";
		navtab3_off = new Image();
                navtab3_off.src = "images/navtab3_off.gif";
                
                navtab4_on = new Image();
		navtab4_on.src = "images/navtab4_on.gif";
		navtab4_off = new Image();
                navtab4_off.src = "images/navtab4_off.gif";
                
		navtab5_on = new Image();
		navtab5_on.src = "images/navtab5_on.gif";
		navtab5_off = new Image();
		navtab5_off.src = "images/navtab5_off.gif";
                
                navtab1b_on = new Image();
		                navtab1b_on.src = "images/navtab1_on.gif";
		                navtab1b_off = new Image();
		                navtab1b_off.src = "images/navtab1_off.gif";
		                
		                navtab2b_on = new Image();
				navtab2b_on.src = "images/navtab2_on.gif";
				navtab2b_off = new Image();
		                navtab2b_off.src = "images/navtab2_off.gif";
		                
		                navtab3b_on = new Image();
				navtab3b_on.src = "images/navtab3_on.gif";
				navtab3b_off = new Image();
		                navtab3b_off.src = "images/navtab3_off.gif";
		                
		                navtab4b_on = new Image();
				navtab4b_on.src = "images/navtab4_on.gif";
				navtab4b_off = new Image();
                navtab4b_off.src = "images/navtab4_off.gif";
                
                navtab1c_on = new Image();
		                navtab1c_on.src = "images/navtab1_on.gif";
		                navtab1c_off = new Image();
		                navtab1c_off.src = "images/navtab1_off.gif";
		                
		                navtab2c_on = new Image();
				navtab2c_on.src = "images/navtab2_on.gif";
				navtab2c_off = new Image();
		                navtab2c_off.src = "images/navtab2_off.gif";
		                
		                navtab3c_on = new Image();
				navtab3c_on.src = "images/navtab3_on.gif";
				navtab3c_off = new Image();
		                navtab3c_off.src = "images/navtab3_off.gif";
		                
		                navtab4c_on = new Image();
				navtab4c_on.src = "images/navtab4_on.gif";
				navtab4c_off = new Image();
                navtab4c_off.src = "images/navtab4_off.gif";
                
                navtab1d_on = new Image();
		                navtab1d_on.src = "images/navtab1_on.gif";
		                navtab1d_off = new Image();
		                navtab1d_off.src = "images/navtab1_off.gif";
		                
		                navtab2d_on = new Image();
				navtab2d_on.src = "images/navtab2_on.gif";
				navtab2d_off = new Image();
		                navtab2d_off.src = "images/navtab2_off.gif";
		                
		                navtab3d_on = new Image();
				navtab3d_on.src = "images/navtab3_on.gif";
				navtab3d_off = new Image();
		                navtab3d_off.src = "images/navtab3_off.gif";
		                
		                navtab4d_on = new Image();
				navtab4d_on.src = "images/navtab4_on.gif";
				navtab4d_off = new Image();
                navtab4d_off.src = "images/navtab4_off.gif";
                
                
                
		register_on = new Image();
		register_on.src = "images/register_on.gif";
		register_off = new Image();
		register_off.src = "images/register_off.gif";
              
                
}
                        
function hiLite(imgID,changeID) {
                        
        if (document.images) {
        document.images[imgID].src = eval(changeID + ".src");
        return true;
        }
}