减小字体 增大字体
] 源码如下<br>----------------------------------------------------------<br><html><br><head><br><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><br><title>html－www.51<a target="_blank" href="http://www.newasp.cn/" class="wordstyle">windows</a>.Net</title><br></head><br><body><br><div id="img" style="position:absolute;z-index=99;"><br><img src=http://www.haosc.com/wytx/115/"jsimg/cursor.gif" onClick="pause_resume();" border="0" alt='img'><br></div><br><SCRIPT LANGUAGE="JavaScript"><br><!-- Begin<br>var xPos = document.body.clientWidth-20;<br>var yPos = document.body.clientHeight/2;<br>var step = 1;<br>var delay = 5; <br>var height = 0;<br>var Hoffset = 0;<br>var Woffset = 0;<br>var yon = 0;<br>var xon = 0;<br>var pause = true;<br>var interval;<br>img.style.top = yPos;<br>function changePos() {<br>width = document.body.clientWidth;<br>height = document.body.clientHeight;<br>Hoffset = img.offsetHeight;<br>Woffset = img.offsetWidth;<br>img.style.left = xPos + document.body.scrollLeft;<br>img.style.top = yPos + document.body.scrollTop;<br>if (yon) {<br>yPos = yPos + step;<br>}else {<br>yPos = yPos - step;<br>}<br>if (yPos < 0) {<br>yon = 1;<br>yPos = 0;<br>}<br>if (yPos >= (height - Hoffset)) {<br>yon = 0;<br>yPos = (height - Hoffset);<br>}<br>if (xon) {<br>xPos = xPos + step;<br>}else {<br>xPos = xPos - step;<br>}<br>if (xPos < 0) {<br>xon = 1;<br>xPos = 0;<br>}<br>if (xPos >= (width - Woffset)) {<br>xon = 0;<br>xPos = (width - Woffset);<br>}<br>}<br><br>function start() {<br>img.visibility = "visible";<br>interval = setInterval('changePos()', delay);<br>}<br>function pause_resume() {<br>if(pause) {<br>clearInterval(interval);<br>pause = false;<br>}else {<br>interval = setInterval('changePos()',delay);<br>pause = true;<br>}<br>}<br>start();<br>// End --><br></script><br></body><br></html> <br>
[提示：你可先按照下面代码提示修改 上面部分代码，再按运行，此处看到的演示不完全正确]
减小字体
增大字体
