I want a simple js script to show a popup when a specific option from the dropdown is selected. The name of the selection tag is "ProfileType[0]"

It does not have a id attribute and it contains those special character. I tried to use jquery but no luck with it. And i would prefer if the selection tag code will be untouched means without adding any onchange event to it. And one more thing it already have a onchange event. I know its possible with jquery. You have any good code for this.

```
<select name="ProfileType[0]" onchange="window.location.href = "join.php?pid=" + this.value;">
<option value="1">Personal</option>
<option value="2">Professor</option>
<option value="4">Student</option>
</select>

```

Any help will be very much appreciate. Thanks