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页面上从下往上,由小变大的星星

作者:佚名来源:不详发布时间:2008-5-23 9:03:22

<BODY bgcolor="#008000"><SCRIPT language=JavaScript><!--Image0=new Image();Image0.src="/html/UploadPic/2008-5/20085239322143.gif";Amount=16; Ypos=new Array();Xpos=new Array();Speed=new Array();rate=new Array();grow=new Array();Step=new Array();Cstep=new Array();nsSize=new Array();ns=(document.layers)?1:0;WinHeight=(document.layers)?window.innerHeight:window.document.body.clientHeight;WinWidth=(document.layers)?window.innerWidth:window.document.body.clientWidth;for (i=0; i < Amount; i++){                                                                 Ypos[i] = Math.round(Math.random()*WinHeight); Xpos[i] = Math.round(Math.random()*WinWidth); Speed[i]= Math.random()*4+4; Cstep[i]=0; Step[i]=Math.random()*0.1+0.05; grow[i]=10; nsSize[i]=Math.random()*15+5;}if (ns){for (i = 0; i < Amount; i++){document.write("<LAYER NAME='sn"+i+"' LEFT=0 TOP=0><img src="+Image0.src+" name='N' width="+nsSize[i]+" height="+nsSize[i]+"></LAYER>");}}else{document.write('<div style="position:absolute;top:0px;left:0px"><div style="position:relative">');for (i = 0; i < Amount; i++){document.write('<img id="si" src="'+Image0.src+'" style="position:absolute;top:0px;left:0px;filter:alpha(opacity=60)">');}document.write('</div></div>');}function bubbles(){var WinHeight=(document.layers)?window.innerHeight:window.document.body.clientHeight;var WinWidth=(document.layers)?window.innerWidth:window.document.body.clientWidth;var hscrll=(document.layers)?window.pageYOffset:document.body.scrollTop;var wscrll=(document.layers)?window.pageXOffset:document.body.scrollLeft;for (i=0; i < Amount; i++){sy = Speed[i]*Math.sin(270*Math.PI/180);sx = Speed[i]*Math.cos(Cstep[i]);Ypos[i]+=sy;Xpos[i]+=sx; rate[i]=0.4;if (Ypos[i] < -50){Ypos[i]=WinHeight+50;Xpos[i]=Math.round(Math.random()*WinWidth);Speed[i]=Math.random()*4+6;grow[i]=2;nsSize[i]=Math.random()*15+5;}if (ns){document.layers['sn'+i].left=Xpos[i]+wscrll;document.layers['sn'+i].top=Ypos[i]+hscrll;}else{si[i].style.pixelLeft=Xpos[i]+wscrll;si[i].style.pixelTop=Ypos[i]+hscrll;si[i].style.width=grow[i];si[i].style.height=grow[i]; }grow[i]+=rate[i]; Cstep[i]+=Step[i];if (grow[i] > 24) grow[i]=25;}setTimeout('bubbles()',10);}bubbles();//--></SCRIPT>

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