edit the office file online

The javascript code is

1<javascript language="javascript">
2function openOffice(fileurl)
3{
4    var openDocObj = new ActiveXObject("SharePoint.OpenDocuments.1");
5    openDocObj.EditDocument(fileurl); 
6}    
7</script>

The cilent must be the office xp or higher.

I am find the other soulation, that use the office add-in in clients, when i finished it ,i will place it here.