The onFocus event handler notifies you when the focus is set on the upload box.
<html> <head> <title>Using the onFocus event handler</title> </head> <body> <script language="JavaScript"> <!-- function showMsg1(){ document.form1.msg.value += "Focus on the FileUpload boxn"; } function showMsg2(){ document.form1.msg.value += "Focus removed from FileUpload boxn"; } --> </script> <form name="form1"> Click in the FileUpload box to set focus to it. <br><br> <input type="file" name="uploadbox" onFocus = 'showMsg1()'> <br><br> Click on the button to remove focus from the FileUpload box. <br> <input type="button" value="Click here" onClick='showMsg2()'> <br><br> <textarea name="msg" rows="5" cols="50"></textarea> </form> </body> </html>
