<form action="resources/target-for-large-post-many-inline-scripts-and-events.html" method=POST>
<input name="a" type="hidden">
<input type=submit>
</form>
<script>
var val = "";
for (i = 0; i < 200000; ++i)
    val += Math.random();
document.getElementsByName("a")[0].value = val;
</script>