Replacing the Office 365 logo and link in Sharepoint Online Suite Bar

<script src="https://code.jquery.com/jquery-1.12.0.min.js"></script>
<SharePoint:ScriptBlock runat="server">
<script type="text/javascript">
  if (typeof jQuery == 'undefined')
{
document.write('<script type="text/javascript" src="//hemascol.sharepoint.com///hemascol.sharepoint.com///code.jquery.com/jquery.min.js"><' +         '/script>');
}
 var interval = setInterval(function(){
if($('#O365_MainLink_Logo').length)
{       
$('#O365_MainLink_Logo').html("<a href='<Web Site URL>'><img src='<Logo Path>' height='25px'></a>");
$('#O365_MainLink_Logo').attr("style","padding-top: 0px");
clearInterval(interval);               
}
}, 1000); 
</script>
</SharePoint:ScriptBlock>