<script language="Javascript1.2"> var butterflypath="butterfly.gif" //ตำแหน่งที่เก็บรูป butterfly.gif var speed=200; //SPEED IN MILLISECONDS. var change=800; //TIME BETWEEN DIRECTION CHANGES IN MILLISECONDS. var xmax=15; //MAX NUMBER OF PIXEL STEPS LEFT OR RIGHT. var ymax=15; //MAX NUMBER OF PIXEL STEPS UP OR DOWN. var isNS=(navigator.appName=="Netscape"); var _all='all.'; var _style='.style'; var _visible='visible'; var w_x, w_y, x, y, tx, ty, xo, yo, img1; var incrx=2; var incry=8; var xdir=true; var ydir=true; if(isNS){ _all=''; _style=''; _visible='show'; } function init(){ img1=eval('document.'+_all+'img1'+_style); resize(); moveimg(w_x/2,w_y/2); img1.visibility=_visible; animate(); changedirs(); regenerate2(); } function resize(){ if(isNS){ w_x=window.innerWidth-document.img1.document.width; w_y=window.innerHeight-document.img1.document.height; }else{ w_x=document.body.clientWidth-document.image1.width; w_y=document.body.clientHeight-document.image1.height; }} function changedirs(){ xdir=(Math.floor(Math.random()*2)==0); ydir=(Math.floor(Math.random()*2)==0); incrx=Math.floor(Math.random()*xmax); incry=Math.floor(Math.random()*ymax); setTimeout('changedirs()',change); } function animate(){ if(isNS){ tx=img1.left; ty=img1.top; xo=pageXOffset; yo=pageYOffset; }else{ tx=img1.pixelLeft; ty=img1.pixelTop; xo=document.body.scrollLeft; yo=document.body.scrollTop; } if(ydir){ if((ty+incry)>(w_y+yo)){ ydir=false; moveimg(0,-incry); }else{ moveimg(0,incry); } }else{ if((ty-incry)<yo){ ydir=true; moveimg(0,incry); }else{ moveimg(0,-incry); } } if(xdir){ if((tx+incrx)>(w_x+xo)){ xdir=false; moveimg(-incrx,0); }else{ moveimg(incrx,0); } }else{ if((tx-incrx)<xo){ xdir=true; moveimg(incrx,0); }else{ moveimg(-incrx,0); } } setTimeout('animate()',speed); } function moveimg(dx,dy){ if(isNS){ img1.moveBy(dx,dy); }else{ img1.pixelTop+=dy; img1.pixelLeft+=dx; }} function hidebutterfly(){ if (document.all) document.all.img1.style.visibility="hidden" else if (document.layers) document.img1.visibility="hide" } function regenerate(){ window.location.reload() } function regenerate2(){ if (document.layers) setTimeout("window.onresize=regenerate",400) } if (document.all) window.onresize=resize window.onload=init </script>

<div id="img1" style="position:absolute; top:0px; left:0px; visibility:hidden; z-index:10"> <script language="JavaScript1.2"> if (document.all||document.layers) document.write('<a href="javascript:hidebutterfly()"><img src="'+butterflypath+'" border=0" name="image1" border=0></a>') </script> </div>