怎样实现鼠标置于图象上在图象旁边显示另一张图片?
在HTML中有一图片1.gif,怎么样才能实现在浏览器中将鼠标放在图片上时   便在图片1.gif的旁边显示另外一张图片2.gif呢?   要用到Jscript吗?具体怎么实现? 
  <img   src= "1.gif "/>    请各位指教
------解决方案-------------------- <html>  
  <style>  
 img.show{ 
 display:inline; 
 } 
 img.hide{ 
 display:none; 
 } 
  </style>    
  <body>  
  <img id= "img1 " src= "01.jpg " width= "100 " height= "80 "  
 onmouseover= "document.getElementById( 'img2 ').className= 'show ' "  
 onmouseout= "document.getElementById( 'img2 ').className= 'hide ' " 
 />  
  <img id= "img2 " src= "02.jpg " width= "100 " height= "80 " class= "hide "/>  
  </body>  
  </html>
------解决方案--------------------参考下面的函数: 
 function show(tips,flag,url){ 
 	var my_tips=document.all.mytips; 
 	if(flag){ 
 		my_tips.style.display= " "; 
 			if(url!=null){ 
 					my_tips.innerHTML= " <div style= 'width:180px;height:20px;padding:0px;border:1px solid red; '>  "+tips+ " </span>  "; 
 				} 
 				else{ 
 				innerHTML_temp =  " <table width= '165 ' border= '0 ' cellpadding= '0 ' cellspacing= '0 ' class= 'viewWindow '>  "; 
 				innerHTML_temp +=  " <tr>  <td width= '165 ' height= '22 ' background= './images/view_border_top.gif ' align= 'center '> 内容 </td>  </tr>  "; 
 				innerHTML_temp +=  " <tr>  <td height= '157 ' valign= 'top ' background= './images/view_boder_middle.gif '>  "+tips+ " </td>  "; 
 				innerHTML_temp +=  " <tr>  <td height= '4 ' valign= 'top '>  <img src= './images/view_border_bottom.gif ' width= '165 ' height= '4 ' />  </td>  </tr>  "; 
 				innerHTML_temp +=  " </table>  "; 
 				my_tips.innerHTML=innerHTML_temp; 
 				} 
 			my_tips.style.left=event.clientX+10; 
 			my_tips.style.top=event.clientY+10; 
 		} 
 		else{ 
 			my_tips.style.display= "none "; 
 			} 
 }