JavaScript List Filter

filter.js

          // Custom css expression for a case-insensitive contains()
	  $.expr[':'].Contains = function(a,i,m){
		  return (a.textContent || a.innerText || "").toUpperCase().indexOf(m[3].toUpperCase())>=0;
	  };
		
	  // Search function for Find Partners
	    var listFilter = function() {
	    var input = $("input.filterinput");
	    var list = $("#list");
	    
	    $(input).bind('change',function(){
	    	var filter = $(this).val();
	        if(filter) {
	          // this finds all li in an ul that contain the input,
	          // and hide the ones not containing the input while showing the ones that do
	          $(list).find("li:not(:Contains(" + filter + "))").slideUp();
	          $(list).find("li:Contains(" + filter + ")").slideDown();
	        } else {
	          $(list).find("li").slideDown();
	        }
	        return false;
	      });
      	    $(input).bind('keyup',function(){
	    	// fire the above change event after every letter
	    	$(this).change();
	    });
	  }
	  
	 listFilter();