SharePoint 2013/2010 - To show waiting screen/image while loading in background.

SharePoint 2013/2010 - To show waiting screen/image while loading in background.

Pre-Setup: Please download and link the source file to jquery-1.10.2.js. Link to approprite bg imane abd loader image. Set the mail JavaScript in the master page for reuse of the code.

<script src="jquery-1.10.2.js"></script>
<style>
#loading { display:none; position:fixed; left:0; top:100; width:98%; height:100%;            background-image:url("/bg.png"); }
</style>

<script type="text/javascript" language="javascript">
function block_screen() {
   $("#loading").show();
document.getElementById('contentRow').style.display = 'block';
}
function unblock_screen() {
 $("#loading").hide();
document.getElementById('contentRow').style.display = 'block';
}
</script>
<div id="loading" > 
 <div id="loadingImage" style="position:fixed; left:450px; top:400px;"> 
<img  src="loader.gif" /> </div>
</div>


/*To Block Screen and Show waiting gif*/

<script type="text/javascript" language="javascript">
block_screen();
</script>


/*To Unblock Screen*/
<script type="text/javascript" language="javascript">
unblock_screen()
</script>

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Relax..