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<html> 
<head> 
<script language="JavaScript"> 
    function function1(){ 
        document.all.myMarquee.behavior = "alternate"; 
    } 
    function function2(){ 
        document.all.myMarquee.behavior = "slide"; 
    } 
</script> 
</head> 
<body> 
<marquee id="myMarquee">marquee</marquee>  
<input type="button" value="behavior = alternate" onClick="function1();">  
<input type="button" value="behavior = slide" onClick="function2();"> 
</body></html> 
 
     
       
       
    
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