var  t；

function fun(){

clearInterval（t）

t=setInterval ("creatImg()",500)

}

function creatImg(){

//chuangjian

oImg=document.createElement("img")

//fhizhi

oImg.src="img/mouse.png"

oImg.width="100"

oImg.height="100"

oImg.style.position="absolute"

oImg.style.left=parseInt(Math.random()*900)+"px"

oImg.style.top=parseInt(Math.random()*500)+"px"

oImg.onclick =function(){

this.parentNode.removeChild(this)

}

//charu

document.getElementById("box").appendChild(oImg)

}

function fun1(){

clearInterval(t)

}