To initialize the cross-frame menu call dm_initFrame() function instead of standard dm_init() function in the data.js file:

dm_initFrame(framesetID, mainFrameInd, subFrameInd, orientation);

framesetID - id attribute of the frameset;
mainFrameInd - index of the main frame with the top-menu, >=0;
subFrameInd - index of the subframe (where the sub menus will be shown), >=0;
orientation - orientaion of the frame: 0 - horizontal, 1 - vertical.

Example 1: <frameset id="frmSet" rows="200,*">     <frame src="topmenu.html">     <frame src="content.html"> </frameset> So, the dm_initFrame() function will look like: dm_initFrame("frmSet", 0, 1, 0);

Example 2: <frameset id="frmSet" cols="50, 150,*">     <frame src="left.html">     <frame src="topmenu.html">     <frame src="content.html"> </frameset> So, the dm_initFrame() function will look like: dm_initFrame("frmSet", 1, 2, 1);

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The following parameter set the ways of showing sub menus:

var smViewType = 1;

Values:
    0 - from left to right;
    1 - from left to right + upwards;
    2 - from right to left;
    3 - from right to left + upwards;