急!!!!!关于页面指定表格的指定字符搜索问题

[henry0108]

对于页面上存在多个table,只对指定的表格内容进行搜索,不牵涉到其他表格的内容

现在只能进行全页搜索,JS代码如下:
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
var NS4 = (document.layers);
var IE4 = (document.all);

var win = this;
var n = 0;

function findInPage(str) {
var txt, i, found;
if (str == "")
return false;
if (NS4) {
if (!win.find(str))
while(win.find(str, false, true))
n++;
else
n++;
if (n == 0) alert(str + " was not found on this page.");
}
if (IE4) {
txt = win.document.body.createTextRange();

for (i = 0; i <= n && (found = txt.findText(str)) != false; i++) {
txt.moveStart("character", 1);
txt.moveEnd("textedit");
}
if (found) {
txt.moveStart("character", -1);
txt.findText(str);
txt.select();
txt.scrollIntoView();
n++;
}
else {
if (n > 0) {
n = 0;
findInPage(str);
}
else
alert(str + " was not found on this page.");
}
}
return false;
}
// End -->
</script>