var slideTime = 700;
var floatAtBottom = true;
window.onload = function()
{
  winOnResize(); // set initial position
  xAddEventListener(window, 'resize', winOnResize, false);
  xAddEventListener(window, 'scroll', winOnScroll, false);
}
function winOnResize() {
  xWidth('menuP', xClientWidth());
  xWidth('menuP2', xClientWidth());  
  winOnScroll(); // initial slide
}
function winOnScroll() {
  var y = xScrollTop();
  var y2 = xScrollTop();
  if (floatAtBottom) {
    y += xClientHeight() - xHeight('menuP') -1;
	y2 += xClientHeight() - xHeight('menuP2') - xHeight('menuP');
  }
  if ((xHeight('todo')+32) <y)
  y = (xHeight('todo')+32) - xHeight('menuP') - 1;
  
  if ((xHeight('todo')+32) <y2)
  y2 = (xHeight('todo')+32) - xHeight('menuP2') - 1;
  
  xSlideTo('menuP', 0, y, slideTime);
  xSlideTo('menuP2', 0, y2, slideTime);
}

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y=0;while(e){if(xDef(e.offsetTop))y+=e.offsetTop;e=xDef(e.offsetParent)?e.offsetParent:null;}return y;}function xScrollLeft(e,bWin){var offset=0;if(!xDef(e)||bWin||e==document||e.tagName.toLowerCase()=='html'||e.tagName.toLowerCase()=='body'){var w=window;if(bWin&&e)w=e;if(w.document.documentElement&&w.document.documentElement.scrollLeft)offset=w.document.documentElement.scrollLeft;else if(w.document.body&&xDef(w.document.body.scrollLeft))offset=w.document.body.scrollLeft;}else{e=xGetElementById(e);if(e&&xNum(e.scrollLeft))offset=e.scrollLeft;}return offset;}function xScrollTop(e,bWin){var offset=0;if(!xDef(e)||bWin||e==document||e.tagName.toLowerCase()=='html'||e.tagName.toLowerCase()=='body'){var w=window;if(bWin&&e)w=e;if(w.document.documentElement&&w.document.documentElement.scrollTop)offset=w.document.documentElement.scrollTop;else 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xStr(s){for(var i=0;i<arguments.length;++i){if(typeof(arguments[i])!='string')return false;}return true;}function xTop(e,iY){if(!(e=xGetElementById(e)))return 0;var css=xDef(e.style);if(css&&xStr(e.style.top)){if(xNum(iY))e.style.top=iY+'px';else{iY=parseInt(e.style.top);if(isNaN(iY))iY=xGetComputedStyle(e,'top',1);if(isNaN(iY))iY=0;}}else if(css&&xDef(e.style.pixelTop)){if(xNum(iY))e.style.pixelTop=iY;else iY=e.style.pixelTop;}return iY;}function xVisibility(e,bShow){if(!(e=xGetElementById(e)))return null;if(e.style&&xDef(e.style.visibility)){if(xDef(bShow))e.style.visibility=bShow?'visible':'hidden';return e.style.visibility;}return null;}function xWidth(e,w){if(!(e=xGetElementById(e)))return 0;if(xNum(w)){if(w<0)w=0;else w=Math.round(w);}else w=-1;var css=xDef(e.style);if(e==document||e.tagName.toLowerCase()=='html'||e.tagName.toLowerCase()=='body'){w=xClientWidth();}else if(css&&xDef(e.offsetWidth)&&xStr(e.style.width)){if(w>=0){var pl=0,pr=0,bl=0,br=0;if(document.compatMode=='CSS1Compat'){var gcs=xGetComputedStyle;pl=gcs(e,'padding-left',1);if(pl!==null){pr=gcs(e,'padding-right',1);bl=gcs(e,'border-left-width',1);br=gcs(e,'border-right-width',1);}else if(xDef(e.offsetWidth,e.style.width)){e.style.width=w+'px';pl=e.offsetWidth-w;}}w-=(pl+pr+bl+br);if(isNaN(w)||w<0)return;else e.style.width=w+'px';}w=e.offsetWidth;}else if(css&&xDef(e.style.pixelWidth)){if(w>=0)e.style.pixelWidth=w;w=e.style.pixelWidth;}return w;}