用ASP.NET怎么做"在线答疑"呀？

[renxiuli1234]

经常在网上看到，一些网页上有“在线答疑”的一个可浮动的图片，点击图片后出现在线答疑的页面，这个怎么做的？
能简单点说说么？

[llsen]

一个页面
做一个局部刷新的画面
然后用定时器，每隔一段时间刷新一次画面

[renxiuli1234]

不明白~~~~~~初学者，能说白点么？

[满衣兄]

浮动的图片用js实现.搜索"浮动的图片 js"

[renxiuli1234]

< div id="img" style="position:absolute;">
< a href="http://www.eschool.com.cn" target="_blank">
< img src="../../eschool-button.gif" >
< /a>< /div>
< SCRIPT LANGUAGE="javascript">< !-- Beginvar xPos = 20;var yPos = document.body.clientHeight;var step = 1;var delay = 30;var height = 0;var Hoffset = 0;var Woffset = 0;var yon = 0;var xon = 0;var pause = true;var interval;img.style.top = yPos;function changePos() {width = document.body.clientWidth;height = document.body.clientHeight;Hoffset = img.offsetHeight;Woffset = img.offsetWidth;img.style.left = xPos + document.body.scrollLeft;img.style.top = yPos + document.body.scrollTop;if (yon) {yPos = yPos + step;}else {yPos = yPos - step;}if (yPos < 0) {yon = 1;yPos = 0;}if (yPos >= (height - Hoffset)) {yon = 0;yPos = (height - Hoffset);}if (xon) {xPos = xPos + step;}else {xPos = xPos - step;}if (xPos < 0) {xon = 1;xPos = 0;}if (xPos >= (width - Woffset)) {xon = 0;xPos = (width - Woffset);}}function start() {img.visibility = "visible";interval = setInterval(´changePos()´, delay);}start();// End -- >< /script >

上面的是用Jave做的浮动图片代码，红色部分的是图片的URL地址么？