Added Jcrop jQuery plugin

js/jquery.Jcrop.go.js

@@ -0,0 +1,41 @@
+		$(function(){
+			jQuery("#photo_original img").Jcrop({
+				onChange: showPreview,
+				setSelect: [ 0, 0, $("#photo_original img").attr("width"), $("#photo_original img").attr("height") ],
+				onSelect: updateCoords,
+				aspectRatio: 1,
+				boxWidth: 480,
+				boxHeight: 480,
+				bgColor: '#000',
+				bgOpacity: .4
+			});
+		});
+
+		function showPreview(coords) {
+			var rx = 96 / coords.w;
+			var ry = 96 / coords.h;
+
+			var img_width = $("#photo_original img").attr("width");
+			var img_height = $("#photo_original img").attr("height");
+
+			$('#photo_preview img').css({
+				width: Math.round(rx *img_width) + 'px',
+				height: Math.round(ry * img_height) + 'px',
+				marginLeft: '-' + Math.round(rx * coords.x) + 'px',
+				marginTop: '-' + Math.round(ry * coords.y) + 'px'
+			});
+		};
+
+		function updateCoords(c) {
+			$('#photo_crop_x').val(c.x);
+			$('#photo_crop_y').val(c.y);
+			$('#photo_crop_w').val(c.w);
+			$('#photo_crop_h').val(c.h);
+		};
+
+		function checkCoords() {
+			if (parseInt($('#photo_crop_w').val())) return true;
+			alert('Please select a crop region then press submit.');
+			return false;
+		};
+