●==晚辈求教网页按钮的问题(内详)==●

vcfs 2002-07-19 10:33:25

现在有个问题晚辈要请教:在一个网页的最上面有几个按钮,分别是背景音乐的播放和暂停按钮.但是如果网页太长的话,当用户在看网页下面的时候就看不到这几个按钮了,有什么好的方法吗?我有一个思路:把按钮做在一个层上并始终处于浏览器的某个位置!但是我做不出来,麻烦你给帮忙!

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minitigger 2002-07-19

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<html>
<body onscroll=document.recalc(true)>
<div style="height:1;" ><img id="oMove" style="left:expression(document.body.scrollLeft);top:expression(document.body.scrollTop+100);position:absolute"
src="111.gif">
;alksjdf</div>
<p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p>
<p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p>
<p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p>
<p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p>
<p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p><p>asdfasdfasdfasdf</p>
</body>
</html>

seabell 2002-07-19

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<body style="margin:0; overflow:hidden">
<div style="position: absolute ; top: 0;background:#eeeeee;width:100%"><input type=button value=play><input type=button value=pause></div>
<div style="overflow:auto; width:100%; height:100%">
<p>ballack<p>ballack<p>ballack<p>ballack<p>ballack<p>ballack
<p>ballack<p>ballack<p>ballack<p>ballack<p>ballack<p>ballack
<p>ballack<p>ballack<p>ballack<p>ballack<p>ballack<p>ballack
</div>

seabell 2002-07-19

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meizz 2002-07-19

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哦！还没有人给出代码吗？那我就拿出一段我收藏的代码给你：
其中你把图片换成你的按钮就行了。

<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>跟随屏幕移动的图像</title>
<style type="text/css">
#floater {position: absolute;left: 500;top: 146;width: 125;visibility: visible;z-index: 10;}
</style></head>

<body>
<div ID="floater" style="left: 490px; top: 158px">
<p align="center"><img SRC="http://www.csdn.net/images/csdn.gif" alt="图片显示的文字"><br></p>
<table><tr><td height=1000></td></tr></table></div>

<script LANGUAGE="JavaScript">
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);
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);
// --></script>
</body>

</html>

seabell 2002-07-19