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下大雨效果的网页背景
2009-11-24 背景特效 467℃
<html> <head> <title>下雨效果的网页背景</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> </head> <body> <script language="JavaScript"> <!-- var no = 50; var speed = 1; var ns4up = (document.layers) ? 1 : 0; var ie4up = (document.all) ? 1 : 0; var s, x, y, sn, cs; var a, r, cx, cy; var i, doc_width = 800, doc_height = 600; if (ns4up) { doc_width = self.innerWidth; doc_height = self.innerHeight; } else if (ie4up) { doc_width = document.body.clientWidth; doc_height = document.body.clientHeight; } x = new Array(); y = new Array(); r = new Array(); cx = new Array(); cy = new Array(); s = 8; for (i = 0; i < no; ++ i) { initRain(); if (ns4up) { if (i == 0) { document.write("<layer name=\"dot"+ i +"\" left=\"1\" "); document.write("top=\"1\" visibility=\"show\"><font color=\"red\">"); document.write(",</font></layer>"); } else { document.write("<layer name=\"dot"+ i +"\" left=\"1\" "); document.write("top=\"1\" visibility=\"show\"><font color=\"red\">"); document.write(",</font></layer>"); } } else if (ie4up) { if (i == 0) { document.write("<div id=\"dot"+ i +"\" style=\"POSITION: "); document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: "); document.write("visible; TOP: 15px; LEFT: 15px;\"><font color=\"red\">"); document.write(",</font></div>"); } else { document.write("<div id=\"dot"+ i +"\" style=\"POSITION: "); document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: "); document.write("visible; TOP: 15px; LEFT: 15px;\"><font color=\"red\">"); document.write(",</font></div>"); } } } function initRain() { a = 6; r[i] = 1; sn = Math.sin(a); cs = Math.cos(a); cx[i] = Math.random() * doc_width + 1; cy[i] = Math.random() * doc_height + 1; x[i] = r[i] * sn + cx[i]; y[i] = cy[i]; } function makeRain() { r[i] = 1; cx[i] = Math.random() * doc_width + 1; cy[i] = 1; x[i] = r[i] * sn + cx[i]; y[i] = r[i] * cs + cy[i]; } function updateRain() { r[i] += s; x[i] = r[i] * sn + cx[i]; y[i] = r[i] * cs + cy[i]; } function raindropNS() { for (i = 0; i < no; ++ i) { updateRain(); if ((x[i] <= 1) || (x[i] >= (doc_width - 20)) || (y[i] >= (doc_height - 20))) { makeRain(); doc_width = self.innerWidth; doc_height = self.innerHeight; } document.layers["dot"+i].top = y[i]; document.layers["dot"+i].left = x[i]; } setTimeout("raindropNS()", speed); } function raindropIE() { for (i = 0; i < no; ++ i) { updateRain(); if ((x[i] <= 1) || (x[i] >= (doc_width - 20)) || (y[i] >= (doc_height - 20))) { makeRain(); doc_width = document.body.clientWidth; doc_height = document.body.clientHeight; } document.all["dot"+i].style.pixelTop = y[i]; document.all["dot"+i].style.pixelLeft = x[i]; } setTimeout("raindropIE()", speed); } if (ns4up) { raindropNS(); } else if (ie4up) { raindropIE(); } --> </script> <center> <table> <tr><td align=center>这雨下得真大呀!</td></tr> </table> </center> <SCRIPT LANGUAGE="JavaScript"> <!-- hide function goHist(a) { history.go(a); } //--> </script> <SCRIPT language=VBScript> dim c,numgc c=-100000 numgc=document.body.sourceIndex sub SF c=c+2 Document.all(numgc).style.BackgroundPosition="0 "&c id=SetTimeOut("SF",64,"VBScript") end sub SF </SCRIPT> </body> </html>
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