var cur_img_name = "";
browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 )) || 
		  ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )))

// preload images:
	if ( browser) {
	
	header_n = new Image;
	header_n.src = "../gfx/item0_k.gif";
	header_1 = new Image;
	header_1.src = "../gfx/item1_k.gif";
	header_2 = new Image;
	header_2.src = "../gfx/item2_k.gif";
	header_3 = new Image;
	header_3.src = "../gfx/item3_k.gif";
	header_4 = new Image;
	header_4.src = "../gfx/item4_k.gif";
	header_5 = new Image;
	header_5.src = "../gfx/item5_k.gif";
	header_6 = new Image;
	header_6.src = "../gfx/item6_k.gif";
	header_7 = new Image;
	header_7.src = "../gfx/item7_k.gif";
	header_8 = new Image;
	header_8.src = "../gfx/item8_k.gif";
	header_9 = new Image;
	header_9.src = "../gfx/item9_k.gif";
	header_10 = new Image;
	header_10.src = "../gfx/item10_k.gif";

	}

function set_active(imgDocID,imgObjName)
{
if (browser)
	{
if (cur_img_name != "")
	{
document.images[cur_img_name].src = eval(cur_img_name + "_n.src")
	}
cur_img_name = imgDocID;
    document.images[imgDocID].src = eval(imgObjName + ".src");
	}
}