I've a form as

<form  onSubmit=return disableForm(this); action=upload.php method=post name=f id=wizecho enctype=multipart/form-data>

    <input type=file name=file />

    <button onClick=return disableForm(this),ajaxUpload(this.form,'wizecho_upload.php', '&lt;br&gt;Uploading image please wait.....&lt;br&gt;'); return false;>

        Upload Image

    </button>

</form>

It is to upload an image.

Here I need to click on the button to upload the image and I've to use onClick event. I want to remove the upload button and as soon as the file is selected at the input, I want to fire the event. How do I do that??