This will make Quantity fields look like: 
Quantity: [+] [ 1 ] [-]
Assuming jQuery is loaded, put the following into the bottom of layout Standard JavaScript Header Functions.
	
							
						
					Quantity: [+] [ 1 ] [-]
Assuming jQuery is loaded, put the following into the bottom of layout Standard JavaScript Header Functions.
Code:
	
	<style>.bumpbutton {padding:0 !important; width:15px !important; border:1px solid #aaa !important; background:#ccc;}</style>
<script type="text/javascript">
$( document ).ready(function(){
	$( "input[name^='Q_'][type='text']:visible" )
		.before( '<input type="button" class="bumpbutton" value="+" onclick="var f=$(this).next(); var q=f.val(); f.val($.isNumeric(q) ? q - 0 + 1 : 0);" />' )
		.after( '<input type="button" class="bumpbutton" value="-" onclick="var f=$(this).prev(); var q=f.val(); f.val($.isNumeric(q) && q > 0 ? q - 1 : 0);" />');
});
</script>
Comment