function clone(rect) {
		if (!rect) {
			return {left: 0, top: 0, bottom: 0, right: 0, width: 0, height: 0};
		}

		return {
			left: round(rect.left),
			top: round(rect.top),
			bottom: round(rect.bottom),
			right: round(rect.right),
			width: round(rect.width),
			height: round(rect.height)
		};
	}
Utility functions for working with client rects.

@private
@class tinymce.geom.ClientRect