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Scroll An Iframe With An Outside Button


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I found this code on a web page but I cant seem to get it to work also I would like it so it starts scrolling up on mousedown and stops on mouseoutHow do I fix this

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /><script type="text/javascript">var goto_top_type = -1;var goto_top_itv = 0;function goto_top_timer() {var y = goto_top_type == 1 ? document.documentElement.scrollTop : document.body.scrollTop;//alert(y);var moveby = 50; // set this to control scroll seed. minimum is fasty -= Math.ceil(y * moveby / 100);if (y < 0)y = 0;if (goto_top_type == 1)document.documentElement.scrollTop = y;elsedocument.body.scrollTop = y;if (y == 0) {clearInterval(goto_top_itv);goto_top_itv = 0;}}function goto_top() {if (goto_top_itv == 0) {if (document.documentElement && document.documentElement.scrollTop)goto_top_type = 1;else if (document.body && document.body.scrollTop)goto_top_type = 2;elsegoto_top_type = 0;if (goto_top_type > 0)goto_top_itv = setInterval('goto_top_timer()', 50);}}</script><script type="text/javascript">if (event.keyCode == 13){event.returnValue=false;event.cancelBubble = true;frames['iframe1'].location.href=document.form1.url.value;} </script><script type="text/javascript">function displayunicode(e){var unicode=e.keyCode? e.keyCode : e.charCodeif(unicode==13){	frames['iframe1'].location.href=document.getElementById("url").value	}}</script></head><input type="image" src="goto_top.gif" onclick="frames['iframe1'].location."goto_top();"><iframe id="iframe1" src="http://www.google.com" border="0" style="border: 0px; width:476px; height: 197px; position:absolute; top:63px; left:2px;" name="iframe1"></iframe></body></html>

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