function list_menuimages(id){
if(id=="menu_image1")
	menu_image1_src = "img/tab_home_on1.gif"
else menu_image1_src = "img/tab_home_of1.gif"
if(id=="menu_image2")
	menu_image2_src = "img/tab_prod_on1.gif"
else menu_image2_src = "img/tab_prod_of1.gif"
if(id=="menu_image3")
	menu_image3_src = "img/tab_lstnws_on1.gif"
else
	menu_image3_src = "img/tab_lstnws_of1.gif"
if(id=="menu_image4")
	menu_image4_src = "img/tab_trainig_on1.gif"
else menu_image4_src = "img/tab_trainig_of1.gif"
if(id=="menu_image5")
	menu_image5_src = "img/tab_publiction_on1.gif"
else menu_image5_src = "img/tab_publiction_of1.gif"
if(id=="menu_image6")
	menu_image6_src = "img/tab_crslnk_on1.gif"
else menu_image6_src = "img/tab_crslnk_of1.gif"

menu_image1_highlight_src = "img/tab_home_on1.gif"
menu_image2_highlight_src = "img/tab_prod_on1.gif"
menu_image3_highlight_src = "img/tab_lstnws_on1.gif"
menu_image4_highlight_src = "img/tab_trainig_on1.gif"
menu_image5_highlight_src = "img/tab_publiction_on1.gif"
menu_image6_highlight_src = "img/tab_crslnk_on1.gif"
}
document.write("<script language=\"JavaScript1.2\" src=\"js/menu_config.js\"></script>");

menu_browser = "nn3";
menu_mac = false;

if(document.getElementById)
    menu_browser = "nn6";
if(document.all)
    menu_browser = "ie";
if(document.layers)
    menu_browser = "nn";
if(navigator.userAgent.toLowerCase().indexOf("mac"))
    menu_mac = true;
if(navigator.userAgent.toLowerCase().indexOf("ppc"))
    menu_mac = true;
if(navigator.userAgent.toLowerCase().indexOf("powerpc"))
    menu_mac = true;

document.write("<script language=\"JavaScript1.2\" src=\"js/menu_"+menu_browser+".js\"></script>");