【軌跡式游標】語法C121

【語法】

<style type=text/css> <!-- BODY { OVERFLOW-X: hidden; OVERFLOW: scroll } --> </style> <script language="JavaScript1.2"> <!-- var trailLength = 15; var path = "http://home.educities.edu.tw/nkhs9323005/gif0203.gif"; var isIE = false, isNav = false, range = "all.", style = ".style", i, d = 0; var topPix = ".pixelTop", leftPix = ".pixelLeft", images, storage; if (document.layers) { isNav = true, range = "layers.", style = "", topPix = ".top", leftPix = ".left"; } else if (document.all) { isIE = true; } function initTrail() { images = new Array(); for (i = 0; i < parseInt(trailLength); i++) { images[i] = new Image(); images[i].src = path; } storage = new Array(); for (i = 0; i < images.length*3; i++) { storage[i] = 0; } for (i = 0; i < images.length; i++) { // make divs for IE and layers for Navigator (isIE) ? document.write('<div id="obj' + i + '" style="position: absolute; z-Index: 100; height: 0; width: 0"><img src="' + images[i].src + '"></div>') : document.write('<layer name="obj' + i + '" width="0" height="0" z-index="100"><img src="' + images[i].src + '"></layer>'); } trail(); } function trail() { for (i = 0; i < images.length; i++) { eval("document." + range + "obj" + i + style + topPix + "=" + storage[d]); eval("document." + range + "obj" + i + style + leftPix + "=" + storage[d+1]); d = d+2; } for (i = storage.length; i >= 2; i--) {; storage[i] = storage[i-2]; } d = 0; clearTimeout(timer); var timer = setTimeout("trail()", 10); } function processEvent(e) { if (isIE) { storage[0] = window.event.y+document.body.scrollTop+10; storage[1] = window.event.x+document.body.scrollLeft+10; } else { storage[0] = e.pageY+12; storage[1] = e.pageX+12; } } if (isNav) { document.captureEvents(Event.MOUSEMOVE); } if (isIE || isNav) { initTrail(); document.onmousemove = processEvent; } --> </script>

在var path = "http://home.educities.edu.tw/nkhs9323005/gif0203.gif"
中改變出現的圖
在 var trailLength = 15
中改變軌跡的長度