<form method=post action=largepost.asp name=theform onsubmit="breakitup()">
<textarea rows=3 cols=100 name=bigtextarea>a bunch of text...</textarea>
<input type=submit value=go>
</form>
<script language=javascript>
function breakitup()
{
//set the limit for field size.
//如果内容有中文的字符的话，可以设置为:51100
var formlimit = 102399
//get the value of the large input object.
var tempvar = new string
tempvar = document.theform.bigtextarea.value
//if the length of the object is greater than the limit, break it
//into multiple objects.
if (tempvar.length > formlimit)
{
document.theform.bigtextarea.value = tempvar.substr(0, formlimit)
tempvar = tempvar.substr(formlimit)
while (tempvar.length > 0)
{
var objtextarea = document.createelement("textarea")
objtextarea.name = "bigtextarea"
objtextarea.value = tempvar.substr(0, formlimit)
document.theform.appendchild(objtextarea)
tempvar = tempvar.substr(formlimit)
}
}
}
</script>