Button: Toggle size format

Very useful Leo! You hopefully don't mind showing my version of basically the same thing? o)
This one also remembers the column-widths and is easy to adjust to different sets of columns.

function OnClick(data) {
    ToggleColumns( "size",     "sizeauto",     data.func.sourcetab, data.func.command);
    ToggleColumns( "disksize", "disksizeauto", data.func.sourcetab, data.func.command);
}

function ToggleColumns(col01, col02, tab, cmd){
    var remCol = col01, addCol = col02, indexes = [], cols = tab.format.columns;
    for(var idx=0;idx<cols.count;idx++)	indexes[cols(idx).name.toLowerCase()] = idx+1;
    if (indexes[remCol] && !indexes[addCol]) var colIdx = indexes[remCol]-1;
    else if (!indexes[remCol] && indexes[addCol]) var remCol = col02, addCol = col01;
    else return;
    var colIdx = indexes[remCol]-1;	
    tab.vars.Set("TC.Width."+remCol) = cols(colIdx).width;
    var width = tab.vars.Exists("TC.Width."+addCol)?tab.vars.Get("TC.Width."+addCol):"*";
    cmd.RunCommand('Set COLUMNSREMOVE="'+remCol+'" COLUMNSADD="'+addCol+'('+(colIdx)+','+width+')"');
}