floater.js

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	//document.all.floater.style.pixelLeft = 0;
	//document.all.floater.style.pixelTop = 100;
	
	//测<B>检测屏幕分辨率</B> 
/*	var size = redirectPage();



	if (size=="640 x 480")
	{
		document.all.floater.style.pixelLeft = 2;
	}
	else if (size=="800 x 600")
	{
		document.all.floater.style.pixelLeft = 3;
		document.all.floater.style.pixelTop = 100;
	}
	else if (size=="1024 x 768")
	{
		document.all.floater.style.pixelLeft = 122;
		document.all.floater.style.pixelTop = 150;
	}
		
	*/	
     self.onError=null;
     currentX = currentY = 0; 
     whichIt = null; 
     lastScrollX = 0; lastScrollY = 0;
     NS = (document.layers) ? 1 : 0;
     IE = (document.all) ? 1: 0;
     <!-- STALKER CODE -->
     function heartBeat() {
         if(IE) { diffY = document.body.scrollTop; diffX = document.body.scrollLeft; }
     if(NS) { diffY = self.pageYOffset; diffX = self.pageXOffset; }
         if(diffY != lastScrollY) {
     percent = .1 * (diffY - lastScrollY);
     if(percent > 0) percent = Math.ceil(percent);//返回最小的整数
     else percent = Math.floor(percent);//返回最大的整数
                     if(IE) document.all.floater.style.pixelTop += percent;
                     if(NS) document.floater.top += percent; 
     lastScrollY = lastScrollY + percent;
     }
         if(diffX != lastScrollX) {
             percent = .1 * (diffX - lastScrollX);
             if(percent > 0) percent = Math.ceil(percent);
             else percent = Math.floor(percent);
             lastScrollX = lastScrollX + percent;
         }    
     }
     <!-- /STALKER CODE -->


     <!-- DRAG DROP CODE  -->
     function checkFocus(x,y) { 
     stalkerx = document.floater.pageX;
     stalkery = document.floater.pageY;
     stalkerwidth = document.floater.clip.width;
     stalkerheight = document.floater.clip.height;
     if( (x > stalkerx && x < (stalkerx+stalkerwidth)) && (y > stalkery && y < (stalkery+stalkerheight))) return true;
     else return false;
     }
     function grabIt(e) {
         if(IE) {
             whichIt = event.srcElement;
             while (whichIt.id.indexOf("floater") == -1) {
                 whichIt = whichIt.parentElement;


                 if (whichIt == null) { return true; }
         }
             whichIt.style.pixelLeft = whichIt.offsetLeft;
         whichIt.style.pixelTop = whichIt.offsetTop;
             currentX = (event.clientX + document.body.scrollLeft);
             currentY = (event.clientY + document.body.scrollTop);     
         } else { 
     window.captureEvents(Event.MOUSEMOVE);
     if(checkFocus (e.pageX,e.pageY)) { 
     whichIt = document.floater;
     StalkerTouchedX = e.pageX-document.floater.pageX;
     StalkerTouchedY = e.pageY-document.floater.pageY;
     } 
         }
     return true;
     }
     function moveIt(e) {
         if (whichIt == null) { return false; }
         if(IE) {
         newX = (event.clientX + document.body.scrollLeft);
         newY = (event.clientY + document.body.scrollTop);
         distanceX = (newX - currentX); distanceY = (newY - currentY);
         currentX = newX; currentY = newY;
         whichIt.style.pixelTop += distanceY;
             if(whichIt.style.pixelTop < document.body.scrollTop) whichIt.style.pixelTop = document.body.scrollTop;
             if(whichIt.style.pixelTop > document.body.offsetHeight + document.body.scrollTop - whichIt.style.pixelHeight - 5) whichIt.style.pixelTop = document.body.offsetHeight + document.body.scrollTop - whichIt.style.pixelHeight - 5;
             event.returnValue = false;
         } else { 
             whichIt.moveTo(e.pageX-StalkerTouchedX,e.pageY-StalkerTouchedY);
     if(whichIt.top < 0+self.pageYOffset) whichIt.top = 0+self.pageYOffset;
     if( (whichIt.top + whichIt.clip.height) >= (window.innerHeight+self.pageYOffset-17)) whichIt.top = ((window.innerHeight+self.pageYOffset)-whichIt.clip.height)-17;
     return false;
         }
     return false;
     }
     function dropIt() {
         whichIt = null;
     if(NS) window.releaseEvents (Event.MOUSEMOVE);
     return true;
     }
     <!-- DRAG DROP CODE -->
     if(NS) {
         window.captureEvents(Event.MOUSEUP|Event.MOUSEDOWN);
         window.onmousedown = grabIt;
         window.onmousemove = moveIt;
         window.onmouseup = dropIt;
     }
     if(IE) {
        // document.onmousedown = grabIt;
       //  document.onmousemove = moveIt;
       //  document.onmouseup = dropIt;
     }
     if(NS || IE) action = window.setInterval("heartBeat()",1);
     
     
     function redirectPage() 
     {
		if ((screen.width == 640) && (screen.height == 480)) 
		size = "640 x 480";
		else if ((screen.width == 800) && (screen.height == 600))
		size = "800 x 600";
		else if ((screen.width == 1024) && (screen.height == 768))
		size = "1024 x 768";
		else size = "1024 x 768";		
		return size;
	}