var change = function(node, add) { 
var change = function(node, add){ 
	_updateNavControls: function(){		// summary: Updates the navigation controls to hide/show them when at		//	the first or last images.		var cells = [];		var change = function(node, add) {			var fn = add ? "addClass" : "removeClass";			dojo[fn](node,"enabled");			dojo[fn](node,"thumbClickable");		};				var pos = this.isHorizontal ? "scrollLeft" : "scrollTop";		var size = this.isHorizontal ? "offsetWidth" : "offsetHeight";		change(this.navPrev, (this.thumbScroller[pos] > 0));				var last = this._thumbs[this._thumbs.length - 1];		var addClass = (this.thumbScroller[pos] + this._scrollerSize < this.thumbsNode[size]);		change(this.navNext, addClass);	}
5168	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5168/91b6caaa38393137306e8a7b72adae5e58342e2f/ThumbnailPicker.js/clean/image/ThumbnailPicker.js