[invisionfree] limit signature links

<script>
/*Limit images in the signature
by Godkillah
phantom-designs.net*/

var limit=3 //how many images are allowed in the signature

if(location.href.match(/act=UserCP&CODE=22/i)){
document.forms['REPLIER'].onsubmit=function(){
sig=document.forms['REPLIER'].Post.value.toLowerCase()
if(sig.split('\[img\]').length>limit){
alert("You have got to many images in your signature, you're only allowed to have "+limit+" images")
return false
}}}
</script>