网页之间窗口切换方法一

=============================a.htm===
<script language='javascript'>
var oWinMain = true;
</script>
<div>a.htm</div>
<a href='b.htm' target='openB'>openB</a>
<BR>
<a href='c.htm' target='openC'>openC</a>

=============================b.htm===
<script language='javascript'>
var oWinOpener;
if(window.opener.oWinMain!=null)
oWinOpener = window.opener;
else
oWinOpener = null;
window.focus();
function setParentFocus()
{
window.opener.focus();
}
function goBack()
{
if(oWinOpener!=null)
oWinOpener.focus();
else
window.opener.setParentFocus();
}
</script>
<div>b.htm</div>
<a href='c.htm' target='openC'>openC</a> | <a href="javascript:goBack();">back</a>

=============================c.htm===
<script language='javascript'>
var oWinOpener;
if(window.opener.oWinMain!=null)
oWinOpener = window.opener;
else
oWinOpener = null;
window.focus();
function setParentFocus()
{
window.opener.focus();
}
function goBack()
{
if(oWinOpener!=null)
oWinOpener.focus();
else
window.opener.setParentFocus();
}
</script>
<div>c.htm</div>
<a href='b.htm' target='openB'>openB</a> | <a href="javascript:goBack();">back</a>