<script type="text/javascript" charset="utf-8">
 
	$(document).ready(function() {
 
		// Adjust the ID, maximum value and message as necessary
		var qID = 1644801;
		var mVal = 5;
		var msg = 'balfasel beispieltext.';
 
		// Interrupt the Next/Submit function
		$('form#limesurvey').submit(function(){	
 
			// Override the built-in "disable navigation buttons" feature
			$('#moveprevbtn, #movenextbtn, #movesubmitbtn').attr('disabled', '');
 
			// Get the slider value
			var slider = Number($('#question'+qID+' div.slider_callout').text());
 
			// alert('DEBUG-ALERT - Slider-Value: ' + slider);
 
			// Alert and abort submit if slider is not greater than mVal
			if(slider > mVal) {	
				alert (msg);
				return false;
			}
			else {
				return true;
			}
		});
 
	});
 
</script>

<script type="text/javascript" charset="utf-8">
 
	$(document).ready(function() {
 
		// Interrupt the Next/Submit function
		$('form#limesurvey').submit(function(){	
 
			// Override the built-in "disable navigation buttons" feature
			$('#moveprevbtn, #movenextbtn, #movesubmitbtn').attr('disabled', '');
 
			// Get the slider values
			var slider1 = Number($('#slider-callout-SSSXGGGXQQQ').text());
 
			// Alert and abort submit if slider is not within acceptable range
 
				if(slider1 > 5) {	
				alert ('blafasel beispieltext');
				return false;
				}
				else {
					return true;
				}
		});
 
	});
 
</script>

#questionQQ .ui-slider-horizontal .ui-slider-handle {
	background: transparent url(yourImage.png) 0 0 no-repeat;
}