flag=false;
w=0;
h=200;
t=200;
ax=" ";
dx=" ";
function add(){
flag=!flag


if(flag){
if(dx){clearInterval(dx)}
ax=setInterval('ad()', 1);
document.getElementById('td').style.display="inline"
}
else{
if(ax){clearInterval(ax)}
dx=setInterval('dl()', 1);
}
}


function ad(){
w=w+20;
h=h+15;
t=t-6
if(w==500){clearInterval(ax)
}
document.getElementById('s').style.width=w+"px"
document.getElementById('s').style.height=h+"px"
document.getElementById('t').style.top=t+"px"
}

function dl(){
w=w-20;
h=h-15;
t=t+6
if(w==0){clearInterval(dx)
document.getElementById('td').style.display="none"}
document.getElementById('s').style.width=w+"px"
document.getElementById('s').style.height=h+"px"
document.getElementById('t').style.top=t+"px"
}











function vd(ids){
	document.getElementById('i1').style.display="none";
	document.getElementById('i2').style.display="none";
	document.getElementById('i3').style.display="none";
	document.getElementById(ids).style.display="inline-block";
}