Selectable: moved position absolute and z-index to css. Fixed #4475 - Selectable helper has z-index hard coded

Author: rdworth

themes/base/jquery.ui.selectable.css

@@ -1,3 +1,3 @@
 /* Selectable
 ----------------------------------*/
-.ui-selectable-helper { border:1px dotted black }
+.ui-selectable-helper { position: absolute; z-index: 100; border:1px dotted black; }

ui/jquery.ui.selectable.js

@@ -90,8 +90,6 @@ $.widget("ui.selectable", $.ui.mouse, {
 		$(options.appendTo).append(this.helper);
 		// position helper (lasso)
 		this.helper.css({
-			"z-index": 100,
-			"position": "absolute",
 			"left": event.clientX,
 			"top": event.clientY,
 			"width": 0,