Code
<a href="javascript://" onclick="new _uWnd('myName','Window title',500,200,{autosize:1,maxh:300,minh:100},'Here goes window content');">Click me</a>

We need the following part which is the code of an Ajax window itself:
Code
new _uWnd('myName','Window title',500,200,{autosize:1,maxh:300,minh:100},''Here goes window content');

where:
myName – is a unique name of a window. This text is displayed nowhere but is used to work with such windows;

Window title – is a title that is displayed at the top of an Ajax window;

500 – width;

200 – height;

Here goes window content- is content of a window. Here HTML codes can be used.
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Ok. this is a code for a blue pop up window. It will appear as a link on the page, but it it possible to have this window pop up when the visitor leaves my site?