function ChangeMainBtnView(button, mode)
{   /*IE6*/
    button.className = mode == 1 ? 'main-button-hover' : 'main-button';
} 
function ChangeSecondBtnView(button, mode)
{   /*IE6*/
    button.className = mode == 1 ? 'second-button-hover' : 'second-button';
}