点击链接让页面在iFrame切换里显示

<a href="1.html" target="iFrame1 ">page1 </a>
<a href="2.html" target="iFrame1 ">page2 </a>
<a href="3.html" target="iFrame1 ">page3 </a>
<a href="4.html" target="iFrame1 ">page4 </a>
<div id="iFrame1 " style="z-index: 18; left: 220px; position: absolute; top: 200px;"></div>

定义链接的target为所要切换的iframe即可