function init_main_menu() {
	//==========================================================================================
	// if supported, initialize TransMenus
	//==========================================================================================
	// Check isSupported() so that menus aren't accidentally sent to non-supporting browsers.
	// This is better than server-side checking because it will also catch browsers which would
	// normally support the menus but have javascript disabled.
	//
	// If supported, call initialize() and then hook whatever image rollover code you need to do
	// to the .onactivate and .ondeactivate events for each menu.
	//==========================================================================================
	if (TransMenu.isSupported()) {
		TransMenu.initialize();

		// hook all the highlight swapping of the main toolbar to menu activation/deactivation
		// instead of simple rollover to get the effect where the button stays hightlit until
		// the menu is closed.
		document.getElementById("mm_about").onmouseover = function() {
			ms.hideCurrent();
			this.className = "hover";
			MM_swapImage('MainMenuAbout','','images/mainmenu/about_R.gif',1)
		}
		document.getElementById("mm_about").onmouseout = function() { this.className = ""; MM_swapImgRestore()}

		products_menu.onactivate = function() { document.getElementById("mm_products").className = "hover"; MM_swapImage('MainMenuProd','','images/mainmenu/prod_R.gif',1); };
		products_menu.ondeactivate = function() { document.getElementById("mm_products").className = ""; MM_swapImgRestore();};

		support_menu.onactivate = function() { document.getElementById("mm_support").className = "hover"; MM_swapImage('MainMenuSupp','','images/mainmenu/supp_R.gif',1);};
		support_menu.ondeactivate = function() { document.getElementById("mm_support").className = ""; MM_swapImgRestore()};

/*		investor_menu.onactivate = function() { document.getElementById("mm_investor").className = "hover"; MM_swapImage('MainMenuInve','','images/mainmenu/inve_R.gif',1);};
		investor_menu.ondeactivate = function() { document.getElementById("mm_investor").className = ""; MM_swapImgRestore()};
*/
		contact_menu.onactivate = function() { document.getElementById("mm_contact").className = "hover"; MM_swapImage('MainMenuCont','','images/mainmenu/cont_R.gif',1);};
		contact_menu.ondeactivate = function() { document.getElementById("mm_contact").className = ""; MM_swapImgRestore()};
	}
}