gistfile1.js

<script>
 
function startScrolling(){
 var getInt = setInterval(function js_spinner(){
	if(typeof js_spinner_bottom === 'undefined'){
		js_spinner_bottom = 0;
	}
	js_spinner_bottom += 300;
	if(js_spinner_bottom > 1200){
		js_spinner_bottom = 0;
	}
	$('div.top_slide').animate({ bottom: js_spinner_bottom+'px'}, 500, 'swing');
	}
,timer);
 
 }

$('.third_projects').mouseenter(clearInterval(getInt)).mouseleave(startScrolling);


</script>