<html>
<body onload='javaScript:createBarcodes()' align='center' style='margin:0;'>
<div style=''><div id='barcodesId' style='display:grid;grid-template-columns: auto auto auto;'>
</div></div>
<body>
<script>
function createBarcodes(){
var barcodes= '';
var setNumber=1;
for(var i=setNumber*30;i<(setNumber+1)*30;i++){
barcodes=barcodes+"<div style='text-align:center;width:1.5in;height:1in;overflow:hidden;' ><div style='position:relative;top:-10px;'><img src='https://barcode.tec-it.com/barcode.ashx?data="+(i+1000)+"&code=Code128'/></div></div>";
}
document.getElementById('barcodesId').innerHTML=barcodes;
}
</script>
</html>