<iframe src="./sadari.php?sn=5" id="5" name="5" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=10" id="10" name="10" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=17" id="17" name="17" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=18" id="18" name="18" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=21" id="21" name="21" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=22" id="22" name="22" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=23" id="23" name="23" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=25" id="25" name="25" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=30" id="30" name="30" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=32" id="32" name="32" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=33" id="33" name="33" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=34" id="34" name="34" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=35" id="35" name="35" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=38" id="38" name="38" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=41" id="41" name="41" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=42" id="42" name="42" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=43" id="43" name="43" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=44" id="44" name="44" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=45" id="45" name="45" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=46" id="46" name="46" width="300" height="150" frameborder="0"><br>
<iframe src="./sadari.php?sn=47" id="47" name="47" width="300" height="150" frameborder="0"><br>
한 페이지에서 다수의 파일을 iframe으로 불려오려고 하는데요.

첫줄의 페이지만 src 내 url 이 활성화 되고 2번째 줄부터는 url 이 활성화 되지 않네요.
왜 그럴까요? 고수님들의 고언 부탁드립니다.