/*********************************************************************
* (C) 03/06/2003 ABDesign, Kiev
*
* File: menu.js
*
* Project: TangramLTD
*
* Author: Artem Babenko
*
* Module: Javascript program
*
* Description: this class encapsulate all common static settings, constants and functions for Menu
*
* External modules: none
*
* Functions: see below
*
* Last updated: 03/06/2003 by Artem Babenko
*
*********************************************************************/

		browser_name = navigator.appName;
        browser_version = parseFloat(navigator.appVersion);

        if (browser_name == "Netscape" && browser_version >= 3.0) { roll = 'true'; }
        else if (browser_name == "Microsoft Internet Explorer" && browser_version >=
        3.0) { roll = 'true'; }
        else { roll = 'false'; }



        if (roll == 'true')
		{
        x1=new Image; x1.src="http://tangramltd.com/images/2_bkg_on.gif";
		x2=new Image; x2.src="http://tangramltd.com/images/1_bkg_on.gif";
		x3=new Image; x3.src="http://tangramltd.com/images/3_bkg_on.gif";

        }

      function checkForm_w() {
   zone = document.form_w.type.options[document.form_w.type.selectedIndex].value;
   if (zone == "--------") {
      document.form_w.Submit.disabled = true;
   } else {
      document.form_w.Submit.disabled = false;
   }
}