<script type="text/javascript">function cancelSpace(e){
    var e = e || window.event;
    var elm = e.srcElement || e.target;
    var key = e.keyCode || e.charCode;
    if(key == 32){
        if(elm.tagName.toLowerCase()=="input" && elm.type.toLowerCase()=="text" || elm.tagName.toLowerCase() == "textarea"){
            return;
        }
        if(window.event){
            e.returnValue = false;
        }
        else{
            e.preventDefault();
        }
    }
}

document.onkeypress=cancelSpace;
</script>