大段文字的滚动处理

下面为效果显示

	酒店开展"优质服务月"活动
	南洋海景酒店阿里山俱乐部
	南洋海景酒店试营业新闻发布会
	网络化商务酒店的先锋--珠海南洋海景酒店
	网络化商务酒店的先锋--珠海南洋海景酒店
	网络化商务酒店的先锋--珠海南洋海景酒店
	南洋海景酒店试营业新闻发布会
	酒店开展"优质服务月"活动
	南洋海景酒店试营业新闻发布会
	南洋海景酒店试营业新闻发布会
	更多信息

脚本说明:
把如下代码加入<body>区域中
<SCRIPT language=javascript>

var upH = 17; 
var upW = 15; 
var downH = 17; 
var downW = 15; 
var dragH = 27; 
var dragW = 17; 
var scrollH = 90; 
var speed =15;

var dom = document.getElementById ? true:false;
var nn4 = document.layers ? true:false;
var ie4 = document.all ? true:false;

var mouseY;
var mouseX;

var clickUp = false; 
var clickDown = false; 
var clickDrag = false; 
var clickAbove = false; 
var clickBelow = false;

var timer = setTimeout("",500); 
var upL; 
var upT; 
var downL; 
var downT; 
var dragL; 
var dragT; 
var rulerL; 
var rulerT; 
var contentT; 
var contentH; 
var contentClipH; 
var scrollLength; 
var startY;

function down(e){
	if((document.layers && e.which!=1) || (document.all && event.button!=1)) return true; // Enables the right mousebutton		
	getMouse(e);
	startY = (mouseY - dragT);

if(mouseX >= upL && (mouseX <= (upL + upW)) && mouseY >= upT && (mouseY <= (upT + upH))){
		clickUp = true;
		return scrollUp();
	}

else if(mouseX >= downL && (mouseX <= (downL + downW)) && mouseY >= downT && (mouseY <= (downT + downH))){
		clickDown = true;
		return scrollDown();
	}

else if(mouseX >= dragL && (mouseX <= (dragL + dragW)) && mouseY >= dragT && (mouseY <= (dragT + dragH))){
		clickDrag = true;
		return false;
	}
	else if(mouseX >= dragL && (mouseX <= (dragL + dragW)) && mouseY >= rulerT && (mouseY <= (rulerT + scrollH))){

if(mouseY < dragT){
			clickAbove = true;
			clickUp = true;
			return scrollUp();
		}
	
		else{
			clickBelow = true;
			clickDown = true;
			return scrollDown();
		}
	}

else{
		return true;
	}
}

function move(e){
	if(clickDrag && contentH > contentClipH){
		getMouse(e);
		dragT = (mouseY - startY);
		
		if(dragT < (rulerT))
			dragT = rulerT;		
		if(dragT > (rulerT + scrollH - dragH))
			dragT = (rulerT + scrollH - dragH);
		
		contentT = ((dragT - rulerT)*(1/scrollLength));
		contentT = eval('-' + contentT);

moveTo();
	}

if(ie4)
		return false;
}

function up(){
	clearTimeout(timer);

clickUp = false;
	clickDown = false;
	clickDrag = false;
	clickAbove = false;
	clickBelow = false;
	return true;
}

function getT(){
	if(ie4)
		contentT = document.all.content.style.pixelTop;
	else if(nn4)
		contentT = document.contentClip.document.content.top;
	else if(dom)
		contentT = parseInt(document.getElementById("content").style.top);
}

function getMouse(e){
	if(ie4){
		mouseY = event.clientY;
		mouseX = event.clientX;
	}
	else if(nn4 || dom){
		mouseY = e.pageY;
		mouseX = e.pageX;
	}
}

function scrollDown(){
	getT();
	
	if(clickBelow){
		if(dragT >= (mouseY-(dragH/2)))
			return up();
	}

if(clickDown){
		if(contentT > -(contentH - contentClipH)){			
			dragT = dragT + (speed*scrollLength);
			if(dragT > (rulerT + scrollH - dragH))
				dragT = (rulerT + scrollH - dragH);
			
			contentT = contentT - speed;
			if(contentT < -(contentH - contentClipH))
				contentT = -(contentH - contentClipH);
			
			moveTo();
			timer = setTimeout("scrollDown()",25);
		}
	}
	return false;
}

function reloadPage(){
	location.reload();
}

function eventLoader(){
	if(ie4){
	
		upL = document.all.up.style.pixelLeft;
		upT = document.all.up.style.pixelTop;

downL = document.all.down.style.pixelLeft;
		downT = document.all.down.style.pixelTop;
		
		dragL = document.all.drag.style.pixelLeft;
		dragT = document.all.drag.style.pixelTop;

rulerT = document.all.ruler.style.pixelTop;

contentH = document.all.content.offsetHeight;
		contentClipH = document.all.contentClip.offsetHeight;
	}
	else if(nn4){
	
		upL = document.up.left;
		upT = document.up.top;

downL = document.down.left;
		downT = document.down.top;

dragL = document.drag.left;
		dragT = document.drag.top;		
		
		rulerT = document.ruler.top;
	
		contentH = document.contentClip.document.content.clip.bottom;
		contentClipH = document.contentClip.clip.bottom;
	}
	else if(dom){
	
		upL = parseInt(document.getElementById("up").style.left);
		upT = parseInt(document.getElementById("up").style.top);
		
		downL = parseInt(document.getElementById("down").style.left);
		downT = parseInt(document.getElementById("down").style.top);
	
		dragL = parseInt(document.getElementById("drag").style.left);
		dragT = parseInt(document.getElementById("drag").style.top);
	
		rulerT = parseInt(document.getElementById("ruler").style.top);

contentH = document.getElementById("content").offsetHeight;
		contentClipH = document.getElementById("contentClip").offsetHeight;
		document.getElementById("content").style.top = 0 + "px";
		
	}
	
	scrollLength = ((scrollH-dragH)/(contentH-contentClipH));

if(nn4){
		document.captureEvents(Event.MOUSEDOWN | Event.MOUSEMOVE | Event.MOUSEUP)
		window.onresize = reloadPage;
	}
	document.onmousedown = down;
	document.onmousemove = move;
	document.onmouseup = up;
}

</SCRIPT>

<STYLE type=text/css>#body {
	HEIGHT: 100%; MARGIN: 0px; OVERFLOW: hidden; WIDTH: 100%
}
#content {
	LEFT: 0px; POSITION: absolute; TOP: 0px; VISIBILITY: visible
}
A:hover {
	FONT-SIZE: 9pt; TEXT-DECORATION: underline
}
A:link {
	FONT-SIZE: 9pt; TEXT-DECORATION: none; 000000;: "宋体"
}
A:visited {
	COLOR: #666666; FONT-FAMILY: "宋体"; FONT-SIZE: 9pt; TEXT-DECORATION: none
}
TD {
	FONT-FAMILY: "宋体"; FONT-SIZE: 9pt
}
.90E {
	COLOR: #000000; FONT-FAMILY: "arial"; FONT-SIZE: 9pt
}
.txtfield {
	BACKGROUND-COLOR: #ccffcc; BORDER-BOTTOM: #000000 1px solid; BORDER-LEFT: #000000 1px solid; BORDER-RIGHT: #000000 1px solid; BORDER-TOP: #000000 1px solid; FONT-FAMILY: "宋体"; FONT-SIZE: 9pt
}
#scroll {
	HEIGHT: 351px; LEFT: 180px; POSITION: absolute; TOP: 1px; VISIBILITY: visible; WIDTH: 17px
}
</STYLE>
<BODY aLink=#616161 bgColor=#ebece0 link=#616161 onload=eventLoader(); 
text=#616161 topMargin=9 vLink=#616161 marginwidth="10" marginheight="9">
<DIV id=up 
style="HEIGHT: 15px; LEFT: 161px; POSITION: absolute; TOP: 2px; VISIBILITY: visible; WIDTH: 17px; Z-INDEX: 1"><IMG 
height=20 src="up.gif" width=13></DIV>
<DIV id=down 
style="HEIGHT: 15px; LEFT: 161px; POSITION: absolute; TOP: 112px; VISIBILITY: visible; WIDTH: 17px; Z-INDEX: 2"><IMG 
height=20 src="down.gif" width=13></DIV>
<DIV id=drag 
style="HEIGHT: 27px; LEFT: 161px; POSITION: absolute; TOP: 23px; VISIBILITY: visible; WIDTH: 7px; Z-INDEX: 5"><IMG 
height=25 src="scroller.gif" width=13></DIV>
<DIV id=ruler 
style="HEIGHT: 27px; LEFT: 161px; POSITION: absolute; TOP: 23px; VISIBILITY: visible; WIDTH: 17px; Z-INDEX: 6"></DIV>
<DIV id=contentClip 
style="CLIP: rect(0px 750px 345px 0px); HEIGHT: 133px; LEFT: 1px; OVERFLOW: hidden; POSITION: absolute; TOP: 0px; VISIBILITY: visible; WIDTH: 163px; Z-INDEX: 7">
<DIV id=content style="HEIGHT: 100px; LEFT: -9px; TOP: 1px; WIDTH: 170px">
<DIV align=left>
<TABLE border=0 borderColor=#99cc00 cellPadding=0 cellSpacing=4 width="100%">
  <TBODY>
  <TR>
    <TD bgColor=#ffffff width="4%"> </TD>
    <TD width="96%"><FONT color=#000000>酒店开展"优质服务月"活动</FONT> </TD></TR>
  <TR>
    <TD width="4%"> </TD>
    <TD width="96%"><FONT color=#000000>南洋海景酒店阿里山俱乐部</FONT> </TD></TR>
  <TR>
    <TD bgColor=#ffffff width="4%"> </TD>
    <TD width="96%"><FONT color=#000000>南洋海景酒店试营业新闻发布会 </FONT></TD></TR>
  <TR>
    <TD width="4%"> </TD>
    <TD width="96%"><FONT color=#000000>网络化商务酒店的先锋--珠海南洋海景酒店 </FONT></TD></TR>
  <TR>
    <TD width="4%"> </TD>
    <TD width="96%"><FONT color=#000000>网络化商务酒店的先锋--珠海南洋海景酒店 </FONT></TD></TR>
  <TR>
    <TD width="4%"> </TD>
    <TD width="96%"><FONT color=#000000>网络化商务酒店的先锋--珠海南洋海景酒店 </FONT></TD></TR>
  <TR>
    <TD width="4%"> </TD>
    <TD width="96%"><FONT color=#000000>南洋海景酒店试营业新闻发布会 </FONT></TD></TR>
  <TR>
    <TD width="4%"> </TD>
    <TD width="96%"><FONT color=#000000>酒店开展"优质服务月"活动</FONT> </TD></TR>
  <TR>
    <TD width="4%"> </TD>
    <TD width="96%"><FONT color=#000000>南洋海景酒店试营业新闻发布会 </FONT></TD></TR>
  <TR>
    <TD width="4%"> </TD>
    <TD width="96%"><FONT color=#000000>南洋海景酒店试营业新闻发布会 </FONT></TD></TR>
  <TR>
    <TD height=13 width="4%"> </TD>
    <TD align=right height=13 width="96%"><FONT color=#000000><IMG height=9 
      src="more.gif" width=20><FONT 
    color=#ff6600>更多信息</FONT></FONT></TD></TR></TBODY></TABLE>
<P> </P></DIV></DIV></DIV>