修复门户的移动端模式预览打开PC表单的问题

o2web/source/x_component_portal_PageDesigner/Module/Page.js

@@ -684,8 +684,13 @@ MWF.xApplication.portal.PageDesigner.Module.Page = MWF.PCPage = new Class({
 		return this.data;
 	},
 	preview: function(){
-        var url = "../x_desktop/portal.html?id="+this.json.application+"&page="+this.json.id;
-        window.open(o2.filterUrl(url));
+		if( this.designer.currentDesignerMode === "Mobile" ){
+			var url = "../x_desktop/portalmobile.html?id="+this.json.application+"&page="+this.json.id;
+			window.open(o2.filterUrl(url));
+		}else{
+			var url = "../x_desktop/portal.html?id="+this.json.application+"&page="+this.json.id;
+			window.open(o2.filterUrl(url));
+		}
         // MWF.xDesktop.requireApp("process.FormDesigner", "Preview", function(){
         //
          //    if (this.options.mode=="Mobile"){