browserName = navigator.appName;
	browserVer = parseInt(navigator.appVersion);
	testbrowser = 0;

	if(browserName=="Netscape" || (browserName.indexOf('Explorer')>0 && browserVer > 3))
	{
		dir="/images/";
		testbrowser=1;

		bt_1_off = new Image(); bt_1_off.src = ""+dir+"bt_1_off.gif";
		bt_1_on = new Image(); bt_1_on.src = ""+dir+"bt_1_on.gif";

		bt_2_off = new Image(); bt_2_off.src = ""+dir+"bt_2_off.gif";
		bt_2_on = new Image(); bt_2_on.src = ""+dir+"bt_2_on.gif";

		bt_3_off = new Image(); bt_3_off.src = ""+dir+"bt_3_off.gif";
		bt_3_on = new Image(); bt_3_on.src = ""+dir+"bt_3_on.gif";

		bt_4_off = new Image(); bt_4_off.src = ""+dir+"bt_4_off.gif";
		bt_4_on = new Image(); bt_4_on.src = ""+dir+"bt_4_on.gif";

		bt_5_off = new Image(); bt_5_off.src = ""+dir+"bt_5_off.gif";
		bt_5_on = new Image(); bt_5_on.src = ""+dir+"bt_5_on.gif";

		bt_6_off = new Image(); bt_6_off.src = ""+dir+"bt_6_off.gif";
		bt_6_on = new Image(); bt_6_on.src = ""+dir+"bt_6_on.gif";

		bt_7_off = new Image(); bt_7_off.src = ""+dir+"bt_7_off.gif";
		bt_7_on = new Image(); bt_7_on.src = ""+dir+"bt_7_on.gif";

	}