load url javascript code question

I have two issues can an alert be fired

prior or can a target be used

<script type=”text/javascript”>

function get(eid) {

var d = document;

var r = d.getElementById(eid);

return r;

}

function loadUrl(){

var url = get(‘url’).value;

get(‘urlView’).src = url;

}

</script>

<form>

<input type=”text” id=”url” />

<input type=”button”
value=”Submit”
onclick=”loadUrl();” />

</form>

<iframe id=”urlView” scrolling=”no” width=”200″ height=”100″ align=”center” frameborder=”0″ src=””></iframe>

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