求助啦!!!!!各位高手来帮下忙

function getHTTPPage(url)
dim Http
set Http=server.createobject("Microsoft.XMLHTTP")
Http.open "GET",url,false
Http.send()
if Http.readystate<>4 then
exit function
end if
getHTTPPage=bytesToBSTR(Http.responseBody,"utf-8")
set http=nothing
if err.number<>0 then err.Clear
end function



exit  这个词语在ASP中什么意思!!!!!百度搜了很多了.....找不到!!!!  谢谢各位啦