recurse array function

gistfile1.js

recurse_func = function(arr, callback, delay) {
   	if (typeof(callback) == "function") {
			delay = delay || 200; 
			var self = arr, idx = 0;

			setInterval(function() {
				callback(self[idx], idx);
				idx = (idx+1 < self.length) ? idx+1 : 0;
			}, delay);
		}
	}

	recurse_func(tools_arr, function(item, index){
		$('.other_tools_tool').fadeOut('slow', function(){
	    	$('.other_tools_tool').html(item).fadeIn('slow');
	    });
	} ,3000);