design/frontend/mogan/default/template/catalog/layer/view.phtml

moved javascript to the very bottom

<script>
jQuery(document).ready(function(){
jQuery(document).on('click',"#shop-by-header",function(){
jQuery("#shop-by-content").slideToggle();
});
jQuery(document).on('click',"dt[data-toggle='true']",function(){

var elm=jQuery(this),name=jQuery(this).attr('data-name').split('-')[1];
console.log('dd[data-toggle="toggle-'+name+'"]');
jQuery('.toggle-'+name).slideToggle( "slow",function(){
if(elm.text()==='- '){
elm.find('span').text('+ ');
}else{
elm.find('span').text('- ');
}
});
});
});
</script>java