function ToggleWhistleout(id){
    SetCSSclass("mobile_menu","tabs_off");
    SetCSSclass("broadband_menu","tabs_off");    
    SetCSSclass("mobile_tab","tab_hide");
    SetCSSclass("broadband_tab","tab_hide");
    ShowRoundTabs(id);}
function ShowRoundTabs(id){
    SetCSSclass(id+"_tab","tab_show");
    SetCSSclass(id+"_menu","tabs_on");}
function SetCSSclass(cssClass,value){
if (document.getElementById(cssClass) != null) document.getElementById(cssClass).className = value;}