| 下面框中为脚本显示区 | |
<script language="JavaScript" type="text/javascript"> </script>
|
脚本说明：
把如下代码加入<body>区域中:
<script language="JavaScript">
<!--
IE4 = navigator.appName == "Microsoft Internet Explorer" && parseInt(navigator.appVersion) >= 4;
NS4 = navigator.appName.substring(0,8) == "Netscape" && parseInt(navigator.appVersion) >= 4;
// checkBrowser() -- Checks whether the browser is new enough for some DynamicMovement ...
function checkBrowser(){
if(IE4 || NS4){
return true;
}
return false;
}
// movableObj() -- Creates a new movable object
function movableObj(startX, startY, endX, endY, delay, speed, refId){
this.sX = startX; this.sY = startY; this.eX = endX;
this.eY = endY; this.de = delay; this.sp = speed;
this.ref = refId;
xL = endX - startX;
yL = endY - startY;
with (Math){
if(abs(xL) > abs(yL)){
this.xS = (xL > 0)?1:-1;
this.yS = (yL > 0)?abs(yL / xL):-abs(yL / xL);
this.howManySteps = abs(xL / speed);
} else if(abs(yL) > abs(xL)){
this.yS = (yL > 0)?1:-1;
this.xS = (xL > 0)?abs(xL / yL):-abs(xL / yL);
this.howManySteps = abs(yL / speed);
} else {
this.yS = (yL > 0)?1:-1;
this.xS = (xL > 0)?1:-1;
this.howManySteps = abs(xL / speed);
}
}
this.startMovement = startMovement;
}
// startMovement() -- starts the movement
function startMovement(){
if(checkBrowser()){
if(IE4){
ref = document.all(this.ref).style;
} else {
ref = document[this.ref];
}
doDynamicMovement(this.sX, this.sY, this.eX, this.eY, this.de, this.xS, this.yS, ref, this.sp, this.howManySteps);
}
}
// doDynamicMovement() -- does the Dynamic Movement
function doDynamicMovement(curX, curY, eX, eY, sp, xS, yS, ref, speed, hS){
if(Math.floor(hS - 1) != 0){
hS--;
curX += xS * speed;
curY += yS * speed;
ref.left = Math.round(curX);
ref.top = Math.round(curY);
setTimeout("doDynamicMovement(" + curX + ", " + curY + ", " + eX + ", " + eY + ", " + sp + ", " + xS + ", " + yS + ", ref, " + speed + ", " + hS + ")", sp);
} else {
setPos(eX, eY, ref);
}
}
// setPos() -- sets the end position accurately when doDynamicMovement has done its job
function setPos(x, y, ref){
ref.left = x;
ref.top = y;
}
// -->
</script>
<table width="600">
<tr>
<td><font face="Verdana, Arial"><h3> </h3>
<font size="2"><form>
<div align="center"><center><p><input type="button" onClick="dynaText.startMovement()"
value="按下去看看"> </p>
</center></div>
</form>
<p> </font></p>
<div id="wow"
style="position: absolute; left: -100; top: -100; width: 300;
font-family: Verdana, Arial; font-size: 20pt"><p>欢迎光临南京有线台!
</font></p>
</div></td>
</tr>
</table>
<script language="JavaScript">
<!--
// Here we define the movable object
dynaText = new movableObj(-100,-100,80,180,10,10,"wow");
// -->
</script>