How to write a JS to check if a page is loaded by a normal page or a modeless window?

[Huiyubird]

I have a page which will be loaded by some normal windows and some modeless windows(which is opened by code "window.showModalDialog()"), and I want to show different message in this page to these two situations.

I have thought about to check the existence of parent window, but it fails as a normal page can also have a parent window while loaded after a click on a link or button.

Please help, any hints will be appreciated. Thanks in advanced.

[gits]

do you have controll over the opening of a 'normal' window or a modal one? ... or might that be used randomly in different apps?

when you couldn't control that, i doubt that you could do anything ... but you might try to find out a property of the window that might make it distinct - try to compare the properties of such windows by tracking them with:

for (var i in window) {
    // output as you wish -> just an alert for demo
    alert('prop: ' + i + ' = ' + window[i]);
}

might be that such an modal window has a property that you might use for your requirement (like modal = true ... or similar)