rhminny,
зачем js?
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
.draw {
width: 235px;
height: 57px;
border-radius: 25px 0 25px 0;
border-bottom: 3px solid #980000;
margin: 10px 0 0 15px;
font-size: 26px;
color: #fff;
font-family: 'pf_dindisplay_promedium';
background: #ff3323;
background-image: linear-gradient(45deg, rgba(255,255,255,.0) 50%, rgba(255,255,255,.8), rgba(255,255,255,.0) 70%), radial-gradient(190% 100% at 50% 0%, rgba(255,255,255,.7) 0%, rgba(255,255,255,.5) 50%, rgba(0,0,0,0) 50%);
box-sizing: border-box;
background-position: 200% 0, 0 0;
box-shadow: rgba(0,0,0,.3) 0 2px 5px;
background-repeat: no-repeat;
background-size: 200% 100%, auto;
animation: anim 3s linear infinite;
}
@keyframes anim {
from {
background-position: 200% 0, 0 0;
}
to {
background-position: -200% 0, 0 0;
}
}
</style>
</head>
<body>
<input type="button" name="" value="Отправить" class="draw">
</body>
</html>