<script language=javascript>
str=" aaaaaaa "
alert(str.replace(/((^( ?)+)|(( ?)+)$)/g,""))
</script>
str=" aaaaaaa "
alert(str.replace(/((^( ?)+)|(( ?)+)$)/g,""))
</script>
str=str.replace(/\s| | (;)?/gi, "");alert(str);
document.write(str);
</script>