javascript 缺少对象
function   fun(btnid) 
 { 
 document.Form1.Text1.value=document.getElementById(btnid).name 
 } 
 	 <body   MS_POSITIONING= "GridLayout ">  
 		 <form   id= "Form1 "   method= "post "   runat= "server ">  
 			< <INPUT   id= "Button1 "   style= "Z-INDEX:   103;   LEFT:   152px;   POSITION:   absolute;   TOP:   192px "   type= "button " 
 				value= "Button "   onclick= "fun(Button1) "   name= "Button1 "   runat= "server ">  <INPUT   id= "Text1 "   style= "Z-INDEX:   104;   LEFT:   104px;   POSITION:   absolute;   TOP:   144px "   type= "text " 
 				name= "Text1 "   runat= "server ">  </form>  
 	 </body>    
 想通过点击button1按钮把其id值做为参数传过去,然后再text1中显示其name,一直提醒   缺少对象,大虾怎么回事呢?
------解决方案--------------------onclick= "fun( 'Button1 ') "
------解决方案--------------------onclick= "fun( 'Button1 ') "