字符飞舞

<html>
<head><title>字符飞舞</title>
<script language="JavaScript">
<!--

//下面是在屏幕上飞的字
var message = "welcom";

//下面是字飞过后出现的正文
var finalmessage = "<a href=text111.htm>看源代码</a>";

/*--------------------------------------------------------------------------*/
/*以下的可选择使用*/

//下面是飞字的条数，取1--10之间，本页取的是10
var noOfFlyers = 10;

//下面是每条飞字的颜色，注意：条数是多少，即对应几条颜色
var blkCol = new Array("black","blue","red","green","blue","blue","red","black","red","green");

//下面是每条飞字的字体，注意：条数是多少，即对应几条字体
var blkFont = new Array("arial","timesroman","courier","verdana","timesroman","courier","arial","timesroman","courier","verdana");

//下面是每条飞字的大小，建议在10-32之间，注意：条数是多少，即对应几条大小
var blkSize = new Array("22","14","10","28","29","10","22","24","26","10");

//下面是定义每条飞字是否斜体，注意：条数是多少，即对应几条信息
var blkIt = new Array("0","0","1","0","0","1","1","0","1","1");

/*--------------------------------------------------------------------------*/
/*请不要轻易修改以下代码*/

var ie=document.all?1:0
var ns=document.layers?1:0
var err = 0;

var msgI=1;
var noOfMsgs;

function initialize()
{
	if(!ns&&!ie) {
		document.writeln("<center>"+finalmessage+"</center>");
		document.writeln("<P><P><font face='arial' size=2>You are missing out on all the coolest stuff because of your outdated browser. Upgrade soon.</font>");
		err=1;
		return;
		}

if(noOfFlyers<1||noOfFlyers>10) {handleErr("The number of flying blocks has been assigned an invalid value. Script will terminate.");return}
	if(blkCol.length!=noOfFlyers) {handleErr("The list of block colours has an invalid length. Script will terminate.");return}
	if(blkFont.length!=noOfFlyers) {handleErr("The list of block fonts has an invalid length. Script will terminate.");return}
	if(blkSize.length!=noOfFlyers) {handleErr("The list of block font sizes has an invalid length. Script will terminate.");return}

self.moveTo(0,0);
	self.resizeTo(screen.width,screen.height);

var msg = new String(message);
	aOMsgs = msg.split(" ");
	noOfMsgs = aOMsgs.length+1;
	for(var i = 0; i<aOMsgs.length; i++)
	{
		for(var j = 1; j<=noOfFlyers; j++)
		{
			if(ie) document.writeln("<div id=\"fly"+String((i*noOfFlyers)+j)+"\" class=\"fly"+String(j)+"\" style=\"visibility:hidden\">"+aOMsgs[i]+"</div>");
			if(ns) document.writeln("<layer id=\"fly"+String((i*noOfFlyers)+j)+"\" class=\"fly"+String(j)+"\" visibility=\"hidden\">"+aOMsgs[i]+"</layer>");
		}
	}

if(ie) document.write("<div id=\"mesg\" style=\"position:relative;color:black;visibility:hidden;font-family:arial;\"><center>"+finalmessage+"</center></div>");
	if(ns) document.write("<layer id=\"mesg\" class=\"mesg\" visibility=\"hidden\"><center>"+finalmessage+"</center></layer>");

}

var screen_x = screen.width;
	var screen_y = screen.height;
	
	var window_x = 0.9*screen_x;
	var window_y = 0.6*screen_y;
	var x;
	x=0.6*Math.random();
	if(x>0.3) x+=0.4;
	
	this.start_x = Math.round(window_x*x);
	this.start_y = Math.round(window_y*Math.random());
	
	if(x>0.3) x=0.3*Math.random();
	else x=0.7+0.3*Math.random();
	
	this.stop_x = Math.round(window_x*x);
	this.stop_y = Math.round(window_y*Math.random());
		
        this.slope = (this.stop_y - this.start_y)/(this.stop_x - this.start_x);
		
	this.speed = Math.round(Math.random()*2)+4;
	if(ns) this.speed-=2;
	this.steps = Math.round(Math.abs(this.start_x-this.stop_x)/this.speed);

this.curCol = 0;
	this.curI = 0;
	this.timerID = 0;
	
	if(ie) this.objStyle = eval("document.all(\""+this.objID+"\").style");
	if(ns) this.objStyle = eval("document.layers[\""+this.objID+"\"]");

var tmp = (parseInt(dataID.substring(3))-1)%noOfFlyers;

if(ie) {
		this.color=blkCol[tmp];
		this.objStyle.fontFamily=blkFont[tmp];
		this.objStyle.fontSize=blkSize[tmp]+"pt";
		this.objStyle.fontStyle=(parseInt(blkIt[tmp])?"italic":"normal");

}
	
	this.Animate = animate_fly;

}

function animate_fly()
{
	
	if(ie){ 
		this.objStyle.pixelLeft = this.start_x+this.curI;
		this.objStyle.pixelTop = (this.slope*this.curI) + this.start_y;
		}
	if(ns){
		this.objStyle.left = this.start_x+this.curI;
		this.objStyle.top = (this.slope*this.curI) + this.start_y;
		}
	this.objStyle.visibility="visible";
	if(this.stop_x>this.start_x) this.curI+=this.speed;
	else this.curI-=this.speed;
	if(ie){
	var tmp;
	switch(this.color){
	
		case "white":
		tmp=String("rgb("+String(this.curCol)+","+String(this.curCol)+","+String(this.curCol)+")");
		break;
		
		case "red":
		tmp=String("rgb("+String(this.curCol)+",0,0)");
		break;
		
		case "blue":
		tmp=String("rgb(0,0,"+String(this.curCol)+")");
		break;

case "green":
		tmp=String("rgb(0,"+String(this.curCol)+",0)");
		break;

default:
		}
        this.objStyle.color=tmp;
	if(this.steps>50){
	if(Math.abs(this.curI/this.speed)<25) this.curCol+=10;
	if(Math.abs(this.curI/this.speed)>(this.steps-25)) this.curCol-=5;
	
	}
	}
	if(Math.abs(this.start_x+this.curI-this.stop_x)<=this.speed) {
		clearInterval(this.timerID);
		this.timerID=0;
		this.objStyle.visibility="hidden";
		var end=0;
		for(var i=1; i<=noOfFlyers; i++)
			if(fly[i].timerID) end=1;
		if(!end)
			if(msgI<noOfMsgs) start_flying(msgI++);
			else stop_flying();
	
	}
	
}

var fly = new Array(11);
function start_flying(msgIndex)
{
	if(err) return;
        for(var s=1; s<=noOfFlyers; s++)
	{
		fly[s] = new fly_txt("fly"+String((msgIndex-1)*noOfFlyers+s));
	}

for(s=1;s<=noOfFlyers;s++)
	{
		var cmd = "fly["+s+"].Animate()";
		fly[s].timerID = setInterval(cmd,10);
	}

}

initialize();

//-->
</script>
</body>
</html>