Revert "Dialog: Don't change DOM position on open. Fixes #6137 - dialog('open') causes form elements to reset on IE7."

This reverts commit 67b1db1.

Reverting so I can commit again with the proper author.

Author: scottgonzalez

tests/unit/dialog/dialog_tickets.js

@@ -61,21 +61,4 @@ test("#5531: dialog width should be at least minWidth on creation", function ()
 
 });
 
-test("#6137: dialog('open') causes form elements to reset on IE7", function() {
-	expect(2);
-
-	d1 = $('<form><input type="radio" name="radio" id="a" value="a" checked="checked"></input>' +
-				'<input type="radio" name="radio" id="b" value="b">b</input></form>').dialog({autoOpen: false});
-
-	d1.find('#b')[0].checked = true;
-	equal($('input:checked').val(), 'b', "checkbox b is checked");
-
-	d2 = $('<div></div>').dialog({autoOpen: false});
-
-	d1.dialog('open');
-	equal($('input:checked').val(), 'b', "checkbox b is checked");
-
-	d1.add(d2).remove();
-})
-
 })(jQuery);

ui/jquery.ui.dialog.js

@@ -309,6 +309,9 @@ $.widget("ui.dialog", {
 			uiDialog = self.uiDialog;
 
 		self.overlay = options.modal ? new $.ui.dialog.overlay(self) : null;
+		if (uiDialog.next().length) {
+			uiDialog.appendTo('body');
+		}
 		self._size();
 		self._position(options.position);
 		uiDialog.show(options.show);