function AnyHeight_<?php echo $i_post ?>()

以下のソースの必要性が今いち感じられません。
削除したところで、ビジュアル的な不具合はありません。
このソースを削除すると、ＳＥＯ対策上、ソースが短くなるというメリットはありますが、
削除してしまうと影響の出るデメリットがございましたら、ご教授ください。

<script type=”text/javascript” language=”javascript”>
<?php
$i_post = 1;
while ($i_post <= 20) {
?>
function AnyHeight_<?php echo $i_post ?>()
{
var top_<?php echo $i_post ?>=document.getElementById(“top_level_<?php echo $i_post ?>”).offsetTop;
var bottom_<?php echo $i_post ?>=document.getElementById(“bottom_level_<?php echo $i_post ?>”).offsetTop;
var height_<?php echo $i_post ?>=bottom_<?php echo $i_post ?>-top_<?php echo $i_post ?>;
document.getElementById(“column1_<?php echo $i_post ?>”).style.height=height_<?php echo $i_post ?>+’px’;
document.getElementById(“column2_<?php echo $i_post ?>”).style.height=height_<?php echo $i_post ?>+’px’;
}
<?php
$onload .= ‘AnyHeight_’ . $i_post . ‘(); ‘;
$i_post++;
}
?>
</script>

↑↑↑↑↑
これを削除すると、以下が削除されます。

<script type=”text/javascript” language=”javascript”>
function AnyHeight_1()
{
var top_1=document.getElementById(“top_level_1”).offsetTop;
var bottom_1=document.getElementById(“bottom_level_1”).offsetTop;
var height_1=bottom_1-top_1;
document.getElementById(“column1_1”).style.height=height_1+’px’;
document.getElementById(“column2_1”).style.height=height_1+’px’;
}
function AnyHeight_2()
{
var top_2=document.getElementById(“top_level_2”).offsetTop;
var bottom_2=document.getElementById(“bottom_level_2”).offsetTop;
var height_2=bottom_2-top_2;
document.getElementById(“column1_2”).style.height=height_2+’px’;
document.getElementById(“column2_2”).style.height=height_2+’px’;
}
function AnyHeight_3()
{
var top_3=document.getElementById(“top_level_3”).offsetTop;
var bottom_3=document.getElementById(“bottom_level_3”).offsetTop;
var height_3=bottom_3-top_3;
document.getElementById(“column1_3”).style.height=height_3+’px’;
document.getElementById(“column2_3”).style.height=height_3+’px’;
}
function AnyHeight_4()
{
var top_4=document.getElementById(“top_level_4”).offsetTop;
var bottom_4=document.getElementById(“bottom_level_4”).offsetTop;
var height_4=bottom_4-top_4;
document.getElementById(“column1_4”).style.height=height_4+’px’;
document.getElementById(“column2_4”).style.height=height_4+’px’;
}
function AnyHeight_5()
{
var top_5=document.getElementById(“top_level_5”).offsetTop;
var bottom_5=document.getElementById(“bottom_level_5”).offsetTop;
var height_5=bottom_5-top_5;
document.getElementById(“column1_5”).style.height=height_5+’px’;
document.getElementById(“column2_5”).style.height=height_5+’px’;
}
function AnyHeight_6()
{
var top_6=document.getElementById(“top_level_6”).offsetTop;
var bottom_6=document.getElementById(“bottom_level_6”).offsetTop;
var height_6=bottom_6-top_6;
document.getElementById(“column1_6”).style.height=height_6+’px’;
document.getElementById(“column2_6”).style.height=height_6+’px’;
}
function AnyHeight_7()
{
var top_7=document.getElementById(“top_level_7”).offsetTop;
var bottom_7=document.getElementById(“bottom_level_7”).offsetTop;
var height_7=bottom_7-top_7;
document.getElementById(“column1_7”).style.height=height_7+’px’;
document.getElementById(“column2_7”).style.height=height_7+’px’;
}
function AnyHeight_8()
{
var top_8=document.getElementById(“top_level_8”).offsetTop;
var bottom_8=document.getElementById(“bottom_level_8”).offsetTop;
var height_8=bottom_8-top_8;
document.getElementById(“column1_8”).style.height=height_8+’px’;
document.getElementById(“column2_8”).style.height=height_8+’px’;
}
function AnyHeight_9()
{
var top_9=document.getElementById(“top_level_9”).offsetTop;
var bottom_9=document.getElementById(“bottom_level_9”).offsetTop;
var height_9=bottom_9-top_9;
document.getElementById(“column1_9”).style.height=height_9+’px’;
document.getElementById(“column2_9”).style.height=height_9+’px’;
}
function AnyHeight_10()
{
var top_10=document.getElementById(“top_level_10”).offsetTop;
var bottom_10=document.getElementById(“bottom_level_10”).offsetTop;
var height_10=bottom_10-top_10;
document.getElementById(“column1_10”).style.height=height_10+’px’;
document.getElementById(“column2_10”).style.height=height_10+’px’;
}
function AnyHeight_11()
{
var top_11=document.getElementById(“top_level_11”).offsetTop;
var bottom_11=document.getElementById(“bottom_level_11”).offsetTop;
var height_11=bottom_11-top_11;
document.getElementById(“column1_11”).style.height=height_11+’px’;
document.getElementById(“column2_11”).style.height=height_11+’px’;
}
function AnyHeight_12()
{
var top_12=document.getElementById(“top_level_12”).offsetTop;
var bottom_12=document.getElementById(“bottom_level_12”).offsetTop;
var height_12=bottom_12-top_12;
document.getElementById(“column1_12”).style.height=height_12+’px’;
document.getElementById(“column2_12”).style.height=height_12+’px’;
}
function AnyHeight_13()
{
var top_13=document.getElementById(“top_level_13”).offsetTop;
var bottom_13=document.getElementById(“bottom_level_13”).offsetTop;
var height_13=bottom_13-top_13;
document.getElementById(“column1_13”).style.height=height_13+’px’;
document.getElementById(“column2_13”).style.height=height_13+’px’;
}
function AnyHeight_14()
{
var top_14=document.getElementById(“top_level_14”).offsetTop;
var bottom_14=document.getElementById(“bottom_level_14”).offsetTop;
var height_14=bottom_14-top_14;
document.getElementById(“column1_14”).style.height=height_14+’px’;
document.getElementById(“column2_14”).style.height=height_14+’px’;
}
function AnyHeight_15()
{
var top_15=document.getElementById(“top_level_15”).offsetTop;
var bottom_15=document.getElementById(“bottom_level_15”).offsetTop;
var height_15=bottom_15-top_15;
document.getElementById(“column1_15”).style.height=height_15+’px’;
document.getElementById(“column2_15”).style.height=height_15+’px’;
}
function AnyHeight_16()
{
var top_16=document.getElementById(“top_level_16”).offsetTop;
var bottom_16=document.getElementById(“bottom_level_16”).offsetTop;
var height_16=bottom_16-top_16;
document.getElementById(“column1_16”).style.height=height_16+’px’;
document.getElementById(“column2_16”).style.height=height_16+’px’;
}
function AnyHeight_17()
{
var top_17=document.getElementById(“top_level_17”).offsetTop;
var bottom_17=document.getElementById(“bottom_level_17”).offsetTop;
var height_17=bottom_17-top_17;
document.getElementById(“column1_17”).style.height=height_17+’px’;
document.getElementById(“column2_17”).style.height=height_17+’px’;
}
function AnyHeight_18()
{
var top_18=document.getElementById(“top_level_18”).offsetTop;
var bottom_18=document.getElementById(“bottom_level_18”).offsetTop;
var height_18=bottom_18-top_18;
document.getElementById(“column1_18”).style.height=height_18+’px’;
document.getElementById(“column2_18”).style.height=height_18+’px’;
}
function AnyHeight_19()
{
var top_19=document.getElementById(“top_level_19”).offsetTop;
var bottom_19=document.getElementById(“bottom_level_19”).offsetTop;
var height_19=bottom_19-top_19;
document.getElementById(“column1_19”).style.height=height_19+’px’;
document.getElementById(“column2_19”).style.height=height_19+’px’;
}
function AnyHeight_20()
{
var top_20=document.getElementById(“top_level_20”).offsetTop;
var bottom_20=document.getElementById(“bottom_level_20”).offsetTop;
var height_20=bottom_20-top_20;
document.getElementById(“column1_20”).style.height=height_20+’px’;
document.getElementById(“column2_20”).style.height=height_20+’px’;
}
</script>