/*Mastering JavaScript, Premium Editionby James Jaworski ISBN:078212819XPublisher Sybex CopyRight 2001*/<HTML><HEAD><TITLE>Simple Animation</TITLE><SCRIPT LANGUAGE="JavaScript"><!--function initialize() { start=false imageSource=new Array(5) for(var i=0;i<5;++i){ imageSource[i]=new Image() imageSource[i].src="image"+i+".gif" } delay=500 delta=100 nextImage=1 startAnimation()}function startAnimation() { interval=setInterval('animate()',delay)}function setStart() { start = true}function animate() { if(start==true){ i=nextImage ++nextImage nextImage%=5 if(imageSource[i].complete) document.display.src=imageSource[i].src }}function goFaster() { clearInterval(interval) delay-=delta if(delay<100) delay=100 startAnimation()}function goSlower() { clearInterval(interval) delay+=delta startAnimation()}// --></SCRIPT></HEAD><BODY BGCOLOR="#FFFFFF"><SCRIPT LANGUAGE="JavaScript"><!--initialize()// --></SCRIPT><H1>Simple Animation</H1><IMG NAME="display" SRC="image0.gif" onLoad="setStart()"><BR><FORM><INPUT TYPE="BUTTON" NAME="faster" VALUE="Faster" ONCLICK="goFaster()"><INPUT TYPE="BUTTON" NAME="slower" VALUE="Slower" ONCLICK="goSlower()"></FORM></BODY></HTML>
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