語法展示::  http://home.graffiti.net/yththsgh/


請用IE6.0或更新版本觀看語法特效展示

將以下程式碼複製,貼在<body>及</body>標籤之間。

<script language="JavaScript1.2">
<!--
var no = 5;
var speed = 2;
var snow = new Array();
snow[0] = "1.gif"
snow[1] = "2.gif"
var ns4up = (document.layers) ? 1 : 0;
var ie4up = (document.all) ? 1 : 0;
var dx, xp, yp;
var am, stx, sty;
var i, doc_width = 800, doc_height = 1800;
if (ns4up) {
        doc_width = self.innerWidth;
        doc_height = self.innerHeight;
} else if (ie4up) {
        doc_width = document.body.clientWidth;
        doc_height = document.body.clientHeight;
}
dx = new Array();
xp = new Array();
yp = new Array();
am = new Array();
stx = new Array();
sty = new Array();
j = 0;
for (i = 0; i < no; ++ i) {
        dx[i] = 0;                        // set coordinate variables
        xp[i] = Math.random()*(doc_width-50);  // set position variables
        yp[i] = Math.random()*doc_height;
        am[i] = Math.random()*20;         // set amplitude variables
        stx[i] = 0.02 + Math.random()/10; // set step variables
        sty[i] = 0.7 + Math.random();     // set step variables
        if (ns4up) {                      // set layers
                if (i == 0) {
                        document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src=\""+ snow[j] + "\" border=\"0\"></layer>");
                } else {
                        document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src=\""+ snow[j] + "\" border=\"0\"></layer>");
                }        } else if (ie4up) {                if (i == 0)
{
                        document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"VISIBILITY: visible; TOP: 15px; LEFT: 15px; width:1;\"><img src=\"" + snow[j] + "\" border=\"0\"></div>");
                } else {
                        document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"VISIBILITY: visible; TOP: 15px; LEFT: 15px; width:1;\"><img src=\"" + snow[j] + "\" border=\"0\"></div>");
                }
        }
        if (j == (snow.length-1)) { j = 0; } else { j += 1; }
}
function snowNS() {  // Netscape main animation function
        for (i = 0; i < no; ++ i) {  // iterate for every dot
                yp[i] -= sty[i];                if (yp[i] < -50) {
                        xp[i] = Math.random()*(doc_width-am[i]-30);
                        yp[i] = doc_height;
                        stx[i] = 0.02 + Math.random()/10;
                        sty[i] = 0.7 + Math.random();
                        doc_width = self.innerWidth;
                        doc_height = self.innerHeight;                }
                dx[i] += stx[i];
                document.layers["dot"+i].top = yp[i];
                document.layers["dot"+i].left = xp[i] +
am[i]*Math.sin(dx[i]);
        }
        setTimeout("snowNS()", speed);
}
function snowIE() {  // IE main animation function
        for (i = 0; i < no; ++ i) {  // iterate for every dot
                yp[i] -= sty[i];
                if (yp[i] < -50) {
                        xp[i] = Math.random()*(doc_width-am[i]-30);
                        yp[i] = doc_height;
                        stx[i] = 0.02 + Math.random()/10;
                        sty[i] = 0.7 + Math.random();
                        doc_width = document.body.clientWidth;
                        doc_height = document.body.clientHeight;
                }
                dx[i] += stx[i];
                document.all["dot"+i].style.pixelTop = yp[i];
                document.all["dot"+i].style.pixelLeft = xp[i] +
am[i]*Math.sin(dx[i]);
        }
        setTimeout("snowIE()", speed);
}
if (ns4up) {
        snowNS();
} else if (ie4up) {
        snowIE();
}
-->
</script>

var no = 5; 中修改圖片的數量
var speed = 2; 中修改上飄的速度
snow[0] = "1.gif" 中修改第一張圖片的路徑
snow[1] = "2.gif" 中修改第二張圖片的路徑

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