慢慢变大的图片
下面为效果显示
脚本说明: 第一步：把如下代码加入<body>区域中 <SCRIPT LANGUAGE="JavaScript"> <!-- Begin var ival, imgname, total, steps, maxx, maxy, currentx, currenty, dx, dy; function zoomImg(imgname, total, steps, maxx, maxy) { // convert the total from seconds to miliseconds total = total * 1000; objref = eval("document.getElementById('"+imgname+"')"); currentx = objref.width; currenty = objref.height; // work out how much we need to increase the image by each step // devide image sizes by number of steps to get the amount we need to change each step stepx = maxx / steps; stepy = maxy / steps; // devide the total time (in ms) by the number of steps to get the interval time inttime = total / steps; // set the interval to increase the size of the image by the required pixels functionRef = "resizeImg('"+imgname+"', "+stepx+", "+stepy+", "+maxx+", "+maxy+")"; ival = setInterval(functionRef, inttime); } function resizeImg(imgname, dx, dy, maxx, maxy) { objref = eval("document.getElementById('"+imgname+"')"); currentx = objref.width; currenty = objref.height; if ((currentx<maxx-dx) && (currenty<maxy-dy)) { objref.height = currenty + dy; objref.width = currentx + dx; } else { clearInterval(ival); objref.height = maxy; objref.width = maxx; } } // End --> </script> <div align="center"><img src="letter_3.gif" name="test" id="test"></div> 第二步：把<body>中的内容改为： <body onLoad="zoomImg('test', 10, 150, 300, 200)">
