Fix javascript to not be inserted in the beginning of the html page

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@855 44740490-163a-0410-bde0-09ae8108e29a

www/saml2/idp/SingleLogoutServiceiFrame.php

@@ -373,26 +373,6 @@ if (array_key_exists('name', $spmeta)) $spname = $spmeta['name'];
 
 
 
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 $et = new SimpleSAML_XHTML_Template($config, 'logout-iframe.php');
 
@@ -402,7 +382,7 @@ $et->data['logoutresponse'] = $logoutresponse;
 $et->data['xajax'] = $xajax;
 $et->data['requesterName'] = $spname;
 
-$et->data['head'] = $xajax->printJavascript();
+$et->data['head'] = $xajax->getJavascript();
 
 $et->show();