解决Ext弹出框被Uedit覆盖问题

<form:textarea path="mainText" ></form:textarea>
		<script type="text/javascript">
				var leipiEditor = UE.getEditor(‘mainText‘,{	           
	 	 textarea: ‘text‘,   
	 	initialFrameWidth:1130,
	 	zIndex:1000,
	   //这里可以选择自己需要的工具按钮名称
		toolbars: [[‘fullscreen‘, ‘source‘, ‘undo‘, ‘redo‘,
		            ‘bold‘, ‘italic‘, ‘underline‘, ‘fontborder‘, ‘strikethrough‘, ‘superscript‘, ‘subscript‘, ‘removeformat‘, ‘formatmatch‘, ‘autotypeset‘, ‘blockquote‘, ‘pasteplain‘, ‘|‘, ‘forecolor‘, ‘backcolor‘, ‘insertorderedlist‘, ‘insertunorderedlist‘, ‘selectall‘, ‘cleardoc‘
		            ,‘insertimage‘,‘link‘,‘attachment‘,‘emotion‘,‘inserttable‘,‘fontfamily‘,
		            ‘fontsize‘,  ‘paragraph‘]],
		         //focus时自动清空初始化时的内容
	            autoClearinitialContent:false,
	            //关闭字数统计
	            wordCount:false,
	            //关闭elementPath
	            elementPathEnabled:false,
	            //默认的编辑区域高度
	            initialFrameHeight:300,
	         });
		</script>