function _toolbarcrossref(function_type){
        document.crossrefform.type.value='';
        document.crossrefform.url.value = prompt('Please enter the URL of the website to Cross-Reference');
        if(document.crossrefform.url.value == false || document.crossrefform.url.value.length < 4)
                return;
        setCookie('xrefdisplay',function_type);

        var targetaction = '/keywords-crossref.html';

        if(document.crossrefform.url.value != '' && document.crossrefform.url.value != 'null') {
                loading();
                document.getElementById('xrefurl').value=document.crossrefform.url.value;
                document.crossrefform.action = targetaction;
                document.crossrefform.submit();
        }
}