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78 lines
2.0 KiB
78 lines
2.0 KiB
brOK=navigator.javaEnabled()?true:false;
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//ns4=(document.layers)?true:false;
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//ie4=(document.all)?true:false;
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var vmin=2; var vmax=5; var vr=2; var timer1;
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function Chip(chipname,width,height){
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this.named=chipname;
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this.vx=vmin+vmax*Math.random();
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this.vy=vmin+vmax*Math.random();
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this.w=width; this.h=height;
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this.xx=0;
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this.yy=0;
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this.timer1=null;
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}
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function movechip(chipname) {
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if(brOK){
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eval("chip="+chipname);
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if(ns4){
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pageX=window.pageXOffset;
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pageW=window.innerWidth;
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pageY=window.pageYOffset;
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pageH=window.innerHeight;
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}
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else{
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pageX=window.document.body.scrollLeft;
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pageW=window.document.body.offsetWidth-8;
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pageY=window.document.body.scrollTop;
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pageH=window.document.body.offsetHeight;
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}
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chip.xx=chip.xx+chip.vx;chip.yy=chip.yy+chip.vy;
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chip.vx+=vr*(Math.random()-0.5);
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chip.vy+=vr*(Math.random()-0.5);
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if(chip.vx>(vmax+vmin)) chip.vx=(vmax+vmin)*2-chip.vx;
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if(chip.vx<(-vmax-vmin)) chip.vx=(-vmax-vmin)*2-chip.vx;
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if(chip.vy>(vmax+vmin)) chip.vy=(vmax+vmin)*2-chip.vy;
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if(chip.vy<(-vmax-vmin)) chip.vy=(-vmax-vmin)*2-chip.vy;
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if(chip.xx<=pageX){
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chip.xx=pageX;chip.vx=vmin+vmax*Math.random();
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}
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if(chip.xx>=pageX+pageW-chip.w){
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chip.xx=pageX+pageW-chip.w;
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chip.vx=-vmin-vmax*Math.random();
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}
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if(chip.yy<=pageY){
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chip.yy=pageY;
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chip.vy=vmin+vmax*Math.random();
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}
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if(chip.yy>=pageY+pageH-chip.h){
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chip.yy=pageY+pageH-chip.h;
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chip.vy=-vmin-vmax*Math.random();
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}
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if(ns4){
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eval('document.'+chip.named+'.top ='+chip.yy);
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eval('document.'+chip.named+'.left='+chip.xx);
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}
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else{
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eval('document.all.'+chip.named+'.style.pixelLeft='+chip.xx);
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eval('document.all.'+chip.named+'.style.pixelTop ='+chip.yy);
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}
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chip.timer1=setTimeout("movechip('"+chip.named+"')",100);
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}
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}
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function stopme(chipname){
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if(brOK){
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eval("chip="+chipname);
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if(chip.timer1!=null){
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clearTimeout(chip.timer1)
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}
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}
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}
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var DGbanner2;
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function DGbanner2() {
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DGbanner2=new Chip("DGbanner2",60,80);
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if(brOK){
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movechip("DGbanner2");
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}
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}
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window.onload=DGbanner2;
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