I have a page which includes two jquerys one for slider other for populate dropdawn.The problem is when I put both of them my jqueries are not working together.What should i do?
My index:
   <!-- JAVASCRIPTs for slider -->  
    <script type="text/javascript" src="js/jquery.js"></script>
    <script type="text/javascript" src="js/comment-reply.js"></script>
    <script type="text/javascript" src="js/jquery.quicksand.js"></script>
    <script type="text/javascript" src="js/jquery.tipsy.js"></script>
    <script type="text/javascript" src="js/jquery.prettyPhoto.js"></script>
    <script type="text/javascript" src="js/jquery.cycle.min.js"></script>
    <script type="text/javascript" src="js/jquery.anythingslider.js"></script>
    <script type="text/javascript" src="js/jquery.eislideshow.js"></script>
    <script type="text/javascript" src="js/jquery.easing.js"></script>
    <script type="text/javascript" src="js/jquery.flexslider-min.js"></script>
    <script type="text/javascript" src="js/jquery.aw-showcase.js"></script>
    <script type="text/javascript" src="js/layerslider.kreaturamedia.jquery-min.js"></script>
    <script type="text/javascript" src="js/shortcodes.js"></script>
    <script type="text/javascript" src="js/jquery.colorbox-min.js"></script>
    <script type="text/javascript" src="js/jquery.tweetable.js"></script>
    <script type="text/javascript" src="js/slider-layer.js"></script>
    <!-- JAVASCRIPTs for dropdawn -->  
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(document).on('change','.productcategory',function(){
   console.log("hmm its change");
  var cat_id=$(this).val();
  var div=$('#d').parent(); 
  var op=" ";
  $.ajax({
    type:'get',
    url:'{!!URL::to('findProductName')!!}',
    data:{'id':cat_id},
    success:function(data){
      //console.log('success');
      //console.log(data);
      console.log(data.length);
      op+='<option value="0" selected disabled></option>';
      for(var i=0;i<data.length;i++){
           op+='<option value="'+data[i].id+'">'+data[i].model+'</option>';
     console.log(data[i].model);
       }
       div.find('.productname').html(" ");
       div.find('.productname').append(op);
    },
    error:function(){
    }
  });
});
  });
  </script>  
I try to add
<script type="text/javascript">
   var jQuery = $.noConflict(true);
</script>
but when add this in the end of bouth script then slider work and dropdown not, and when not add this code for conflict works dropdown and slider doesn't work.
I use next links:
Can I use multiple versions of jQuery on the same page?
Any ideas of what I'm doing wrong?