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

dm_initFrame(framesetID, mainFrameInd, subFrameInd, orientation);

framesetID - id attribute of the frameset;
mainFrameInd - index of the main frame (where the top-menu is placed), >=0;
subFrameInd - index of the subframe (where the submenus will be shown), >=0;
orientation - frame orientaion: 0 - top-to-bottom, 1 - left-to-right; 2 - bottom-to-top; 3 - right-to-left.

Example 1: <frameset id="frmSet" rows="200,*">     <frame src="topmenu.html">     <frame src="content.html"> </frameset> So, the dm_initFrame() function call at the end of data.js file 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 call at the end of data.js file will look like: dm_initFrame("frmSet", 1, 2, 1);

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The following parameter controls the ways of showing submenus:

From left to right:

var subMenuAlign="left";
var subMenuVAlign="top";

From left to right + upwards:

var subMenuAlign="left";
var subMenuVAlign="bottom";

From right to left:

var subMenuAlign="right";
var subMenuVAlign="top";

From right to left + upwards:

var subMenuAlign="right";
var subMenuVAlign="bottom";