css update vim function

gistfile1.txt

map <leader>x :call CSSXMLUpdate()<CR>

function! CSSXMLUpdate()
    let currentLine = line('.')
    let bottomLine = line("$")
    while currentLine <= bottomLine
        try
            let @x = 'jvt,"ayt,llvt,"byt,llvt,"cyt,llvt,"dyt,llvt,"eyt,llvt,"fyt,llvt,"gy0'
            let @y = 'l:0
/a
/styleDefault
:s/48px;padding:36px 8px/bpx;padding:cpx dpx/g
'
            let @w = '?id="
wwvt""hy'
            let @z = ':0
/h
/styleDefault
:s/27px;padding:28px 11px/epx; padding:fpx gpx/g
'
            let @s = ':0
h'
            :normal @x
            :normal @y
            sleep 1
            let @h = substitute(@h, '.$', 's', '')
            :normal @w
            :normal @z
            let l:MissionSuccess = 1
        catch
            let l:MissionSuccess = 0
            sleep 1
            :normal @s
        finally
            if (l:MissionSuccess == 1)
                :w
                :normal @s
            endif
        endtry
    endwhile
endfunction