Question

怎么在iframe页面调出父页面的模态框

Answer 1

在弹出模态窗口的时候，将iframe窗口本身作为参数传入，
rt = showModelessDialog( "xxx.htm ",self, " ")
模态窗口中
win = dialogArguments;
s = win.parent.document.formname.textname.value;
alert(s);