Hiding and displaying a tab

There are two parts to this

//---------------------------------------------------------------------
// PART 1. Code to go in the Form Onload as global functions
//---------------------------------------------------------------------

//---------------------------------------------------------------------
hideTab = function( tTab ) {
//---------------------------------------------------------------------

  tTab.style.display = 'none';

};

//---------------------------------------------------------------------
showTab = function( tTab ) {
//---------------------------------------------------------------------

    tTab.style.display='block';
    tTab.style.display='inline';
};

//---------------------------------------------------------------------
//PART 2: Code that can go underneat the onload or on an event to hide a tab
//---------------------------------------------------------------------

hideTab( crmForm.all.tab1Tab );