IE에서 중앙정렬(?)이 안먹혀요 채택완료

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<div><style></div>
<div>#main_header {width: 1000px;height:100px;margin: 0 auto;position: relative}</div>
<div>
</div>
<div>#title { position: absolute; left: 10px; top: 10px; }</div>
<div>#title img { height: 80px; }</div>
<div>#hd_button { position: absolute; width: 80px; right: 0; top: 0; }</div>
<div>#hd_button .trb { float: right; width: 35px; margin: 10px 0 0 10px; }</div>
<div>#hd_button .tlb { float: right; width: 35px; height: 35px; margin: 10px 0 0 0; }</div>
<div>#hd_button .brb { float: right; width: 35px; height: 35px; margin: 10px 0 0 10px; }</div>
<div>#hd_button .blb { float: right; width: 35px; height: 35px; margin: 10px 0 0 0; }</div>
<div></style></div>
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</div>
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<div>
<div><div id="main_header"></div>
<div><span class="Apple-tab-span" style="white-space: pre">	</span><div id="title"></div>
<div><span class="Apple-tab-span" style="white-space: pre">		</span><img style="height: 80px;" src="<?=$g4[path]?>/img/logo.png"></div>
<div><span class="Apple-tab-span" style="white-space: pre">	</span></div></div>
<div><span class="Apple-tab-span" style="white-space: pre">	</span><div id="hd_button"></div>
<div><span class="Apple-tab-span" style="white-space: pre">		</span><div class="trb"><a href="#"><img src="<?=$g4[path]?>/img/button.png"></a></div></div>
<div><span class="Apple-tab-span" style="white-space: pre">		</span><div class="tlb"><a href="#"><img src="<?=$g4[path]?>/img/button.png"></a></div></div>
<div><span class="Apple-tab-span" style="white-space: pre">		</span><div class="brb"><a href="#"><img src="<?=$g4[path]?>/img/button.png"></a></div></div>
<div><span class="Apple-tab-span" style="white-space: pre">		</span><div class="blb"><a href="#"><img src="<?=$g4[path]?>/img/button.png"></a></div></div>
<div><span class="Apple-tab-span" style="white-space: pre">	</span></div></div>
<div></div></div></div></div>
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