'behavior' Example
<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>