Hi,
I think that you can call that link in a popup on windows.open in javascript.
Maybe something like:
<?php
$js='
do_nothing( function(){
var url = \'index.php?option=com_content&view=article&id='.$terms_article.'&tmpl=component\';
newwindow=window.open(url,\'name\',\'height=480,width=450\');
if (window.focus) {newwindow.focus()}
return false;
});';
if(!HIKASHOP_PHP5) {
$doc =& JFactory::getDocument();
} else {
$doc = JFactory::getDocument();
}
$doc->addScriptDeclaration("\n<!--\n".$js."\n//-->\n");
?>
To add after everything in the view "checkout / terms".