?? 19.html
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<html>
<head>
<title>來回滾動的圖片</title>
<SCRIPT LANGUAGE="JavaScript">
step = 0;
obj = new Image();
function anim(xp,xk,smer)
{
obj.style.left = x;
x += step*smer;
if (x>=(xk+xp)/2) {
if (smer == 1) step--;
else step++;
}
else {
if (smer == 1) step++;
else step--;
}
if (x >= xk) {
x = xk;
smer = -1;
}
if (x <= xp) {
x = xp;
smer = 1;
}
setTimeout('anim('+xp+','+xk+','+smer+')', 80); //設置滾動的快慢
}
function moveLR(objID,movingarea_width,c)
{
if (navigator.appName=="Netscape") window_width = window.innerWidth;
else window_width = document.body.offsetWidth;
obj = document.images[objID];
image_width = obj.width;
x1 = obj.style.left;
x = Number(x1.substring(0,x1.length-2));
if (c == 0) {
if (movingarea_width == 0) {
right_margin = window_width - image_width;
anim(x,right_margin,1);}
else {
right_margin = x + movingarea_width - image_width;
if (movingarea_width < x + image_width) window.alert("No space for moving!");
else anim(x,right_margin,1);}}
else {
if (movingarea_width == 0) right_margin = window_width - image_width;
else {
x = Math.round((window_width-movingarea_width)/2);
right_margin = Math.round((window_width+movingarea_width)/2)-image_width;
}
anim(x,right_margin,1);}
}
</SCRIPT>
</head>
<body>
<img src="01.gif" width=468 height=60 name="picture" style='position: absolute; top: 20px; left: 20px;' BORDER=0>
<SCRIPT LANGUAGE="JavaScript">
<!--
setTimeout("moveLR('picture',700,1)",10); //結合區域位置設置圖片滾動范圍
//-->
</SCRIPT>
</body>
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