onFileRemove
fires when the user removes single file from the list of files to upload (clicks the button 
)
void onFileRemove(string realName,string serverName);
| realName | string | the real name of the file (as it's displayed in the control) |
| serverName | string | the file name that the server returns after uploading or null if the file hasn't been uploaded to the server |
Example
myForm.attachEvent("onFileRemove",function(realName,serverName){
//your code here
});