Create a HTML table content in javascript and its array

<script type="text/javascript">
var list_mn;
$( document ).ready(function() {
list_mn=[
    {
        id : '2013',
        jan : 1,
		.
		.
		.
		.
		.
		dec : 12,
    },
	{
        id : '2014',
        jan : 1,
		.
		.
		.
		.
		.
		dec : 12,
    }
]
var tbl=$('<table/>').attr('id','sample_table_data');
$('#html_display_div').append(tbl);
for(var i=0;i<list_mn.length;i++)
{
	if(i==0){
		var tbl1='
		<tr>
		<th>year</th>
		<th>jan</th>
		.
		.
		.
		.
		<th>dec</th>
		</tr>';
	}
	else{
		var tbl1='';
	}

	var trf='<tr>';
	for(var j=0;j<12;j++){
		var td1='<td>'+list_mn[i]['id']+'</td>';
		var td2='<td>'+list_mn[i]['jan']+'</td>';
		var td3='<td>'+list_mn[i]['feb']+'</td>';
		var td4='<td>'+list_mn[i]['mar']+'</td>';
		var td5='<td>'+list_mn[i]['apr']+'</td>';
		var td6='<td>'+list_mn[i]['may']+'</td>';
		var td7='<td>'+list_mn[i]['jun']+'</td>';
		var td8='<td>'+list_mn[i]['jul']+'</td>';
		var td9='<td>'+list_mn[i]['aug']+'</td>';
		var td10='<td>'+list_mn[i]['sep']+'</td>';
		var td11='<td>'+list_mn[i]['oct']+'</td>';
		var td12='<td>'+list_mn[i]['nov']+'</td>';
		var td13='<td>'+list_mn[i]['dec']+'</td>';
	}
		var trl='</tr>';
		$('#sample_table_data').append(tbl1+trf+td1+td2+td3+td4+td5+td6+td7+td8+td9+td10+td11+td12+td13+trl);
}
});
</script>