// MENU REPOSITIONING: This will stop menus showing outside visible screen boundaries.
// To activate:
//  1) Paste this after you create your "new FSMenu" object.
//  2) Make sure the last line contains the correct menu object name, and
//     duplicate for each of the menu objects to which you want this to apply.

page.winW=function()
 { with (this) return Math.max(minW, MS?win.document[db].clientWidth:win.innerWidth) };
page.winH=function()
 { with (this) return Math.max(minH, MS?win.document[db].clientHeight:win.innerHeight) };
page.scrollX=function()
 { with (this) return MS?win.document[db].scrollLeft:win.pageXOffset };
page.scrollY=function()
 { with (this) return MS?win.document[db].scrollTop:win.pageYOffset };

function repositionMenus(mN) { with (this)
{
 var menu = this.menus[mN].lyr;

 // Showing before measuring corrects MSIE bug.
 menu.sty.display = 'block';
 // Reset to and/or store original margins.
 if (!menu._fsm_origML) menu._fsm_origML = menu.ref.currentStyle ?
  menu.ref.currentStyle.marginLeft : (menu.sty.marginLeft || 'auto');
 if (!menu._fsm_origMT) menu._fsm_origMT = menu.ref.currentStyle ?
  menu.ref.currentStyle.marginTop : (menu.sty.marginTop || 'auto');
 menu.sty.marginLeft = menu._fsm_origML;
 menu.sty.marginTop = menu._fsm_origMT;

 // Calculate absolute position within document.
 var menuX = 0, menuY = 0,
  menuW = menu.ref.offsetWidth, menuH = menu.ref.offsetHeight,
  vpL = page.scrollX(), vpR = vpL + page.winW() - 16,
  vpT = page.scrollY(), vpB = vpT + page.winH() - 16;
 var tmp = menu.ref;
 while (tmp)
 {
  menuX += tmp.offsetLeft;
  menuY += tmp.offsetTop;
  tmp = tmp.offsetParent;
 }

 // Compare position to viewport, reposition accordingly.
 var mgL = 0, mgT = 0;
 if (menuX + menuW > vpR) mgL = vpR - menuX - menuW;
 if (menuX + mgL < vpL) mgL = vpL - menuX;
 if (menuY + menuH > vpB) mgT = vpB - menuY - menuH;
 if (menuY + mgT < vpT) mgT = vpT - menuY;

 if (mgL) menu.sty.marginLeft = mgL + 'px';
 if (mgT) menu.sty.marginTop = mgT + 'px';
}};

// Set this to process menu show events for a given object.
//addEvent(listMenu, 'show', repositionMenus, true);