Untitled

<!DOCTYPE html>
<html style="height:100%;margin:0px;padding:0px;overflow:hidden">
<body style="height:100%;margin:0px;padding:0px;overflow:hidden">
</body>
<?php
if($_SERVER["REQUEST_METHOD"] == "POST"){


$site = $_POST["site"];
if(!empty($site)){

echo $site;


echo '<iframe src="' . stripslashes($site) . '" style="width: 100%; height: 100%;"> </iframe>';
if(empty($site)){
echo "<form action=\"test.php\" method=\"post\"> \n
Site: <input type=\"text\" name=\"site\"><br> \n
<input type=\"submit\"> \n
</form>
";
};
}else{


echo '<font color="red">Error: illegal site name!</font>';
};
}elseif($_SERVER["REQUEST_METHOD"] == "GET"){


$site = $_POST["site"];
if(empty($site)){


echo '<iframe src="' . stripslashes($site) . '" frameborder="0" style="overflow:hidden;height:100%;width:100%" height="100%" width="100%"> </iframe>';
}else{ //3


echo '<font color="red">Error: illegal site name!</font>';
};
};
if(empty($site)){
echo "<form action=\"test.php\" method=\"post\"> \n
Site: <input type=\"text\" name=\"site\"><br> \n
<input type=\"submit\"> \n
</form>
";
};
?>
</body>
</html>