广告条随滚动条的移动而移动

转载

mob604756e62e3d 2004-10-30 17:58:00

文章标签 html sed javascript 样式表图层 文章分类 代码人生

<html>

<head>

<title>跟随滚动条的图片</title>

#floater {

POSITION: absolute; VISIBILITY: visible; WIDTH: 10px; Z-INDEX: 10

}

//不知道为什么要定义floater为样式表!

</STYLE>

<!--

function MM_reloadPage(init) { //reloads the window if Nav4 resized

if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {

document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}

else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();

}

MM_reloadPage(true);

// -->

</script>

</head>

<div id="floater" style="position:absolute; left:436px; top:60px; width:152px; height:178px; z-index:12"><img border=0 src="

self.onError=null;

currentX = currentY = 0;

whichIt = null;

lastScrollX = 0; lastScrollY = 0;

NS = (document.layers) ? 1 : 0;

IE = (document.all) ? 1: 0;

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);

else percent = Math.floor(percent);

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);

if(IE) document.all.floater.style.pixelLeft += percent;

if(NS) document.floater.left += percent;

lastScrollX = lastScrollX + percent;

}

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.pixelLeft += distanceX;

whichIt.style.pixelTop += distanceY;

if(whichIt.style.pixelTop < document.body.scrollTop) whichIt.style.pixelTop = document.body.scrollTop;

if(whichIt.style.pixelLeft < document.body.scrollLeft) whichIt.style.pixelLeft = document.body.scrollLeft;

if(whichIt.style.pixelLeft > document.body.offsetWidth - document.body.scrollLeft - whichIt.style.pixelWidth - 20) whichIt.style.pixelLeft = document.body.offsetWidth - whichIt.style.pixelWidth - 20;

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.left < 0+self.pageXOffset) whichIt.left = 0+self.pageXOffset;

if(whichIt.top < 0+self.pageYOffset) whichIt.top = 0+self.pageYOffset;

if( (whichIt.left + whichIt.clip.width) >= (window.innerWidth+self.pageXOffset-17)) whichIt.left = ((window.innerWidth+self.pageXOffset)-whichIt.clip.width)-17;

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;

}

if(NS) {

window.captureEvents(Event.MOUSEUP|Event.MOUSEDOWN);