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Text File  |  2004-09-10  |  2KB  |  97 lines
  1. var brOK=false;
  2. var mie=false;
  3. var aver=parseInt(navigator.appVersion.substring(0,1));
  4. var aname=navigator.appName;
  5.  
  6. function checkbrOK()
  7. {if(aname.indexOf("Internet Explorer")!=-1)
  8. {if(aver>=4) brOK=navigator.javaEnabled();
  9. mie=true;
  10. }
  11. if(aname.indexOf("Netscape")!=-1) 
  12. {if(aver>=4) brOK=navigator.javaEnabled();}
  13. }
  14.  
  15. var vmin=2;
  16. var vmax=5;
  17. var vr=2;
  18. var timer1;
  19.  
  20. function Chip(chipname,width,height)
  21. {this.named=chipname;
  22. this.vx=vmin+vmax*Math.random();
  23. this.vy=vmin+vmax*Math.random();
  24. this.w=width;
  25. this.h=height;
  26. this.xx=0;
  27. this.yy=0;
  28. this.timer1=null;
  29. }
  30.  
  31. function movechip(chipname)
  32. {
  33. if(brOK)
  34. {eval("chip="+chipname);
  35. if(!mie)
  36. {pageX=window.pageXOffset;
  37. pageW=window.innerWidth;
  38. pageY=window.pageYOffset;
  39. pageH=window.innerHeight;
  40. }
  41. else
  42. {pageX=window.document.body.scrollLeft;
  43. pageW=window.document.body.offsetWidth-8;
  44. pageY=window.document.body.scrollTop;
  45. pageH=window.document.body.offsetHeight;
  46. } 
  47.  
  48. chip.xx=chip.xx+chip.vx;
  49. chip.yy=chip.yy+chip.vy;
  50.  
  51. chip.vx+=vr*(Math.random()-0.5);
  52. chip.vy+=vr*(Math.random()-0.5);
  53. if(chip.vx>(vmax+vmin)) chip.vx=(vmax+vmin)*2-chip.vx;
  54. if(chip.vx<(-vmax-vmin)) chip.vx=(-vmax-vmin)*2-chip.vx;
  55. if(chip.vy>(vmax+vmin)) chip.vy=(vmax+vmin)*2-chip.vy;
  56. if(chip.vy<(-vmax-vmin)) chip.vy=(-vmax-vmin)*2-chip.vy;
  57.  
  58.  
  59. if(chip.xx<=pageX)
  60. {chip.xx=pageX;
  61. chip.vx=vmin+vmax*Math.random();
  62. }
  63. if(chip.xx>=pageX+pageW-chip.w)
  64. {chip.xx=pageX+pageW-chip.w;
  65. chip.vx=-vmin-vmax*Math.random();
  66. }
  67. if(chip.yy<=pageY)
  68. {chip.yy=pageY;
  69. chip.vy=vmin+vmax*Math.random();
  70. }
  71. if(chip.yy>=pageY+pageH-chip.h)
  72. {chip.yy=pageY+pageH-chip.h;
  73. chip.vy=-vmin-vmax*Math.random();
  74. }
  75.  
  76. if(!mie)
  77. {eval('document.'+chip.named+'.top ='+chip.yy);
  78. eval('document.'+chip.named+'.left='+chip.xx);
  79. } 
  80. else
  81. {eval('document.all.'+chip.named+'.style.pixelLeft='+chip.xx);
  82. eval('document.all.'+chip.named+'.style.pixelTop ='+chip.yy); 
  83. }
  84. chip.timer1=setTimeout("movechip('"+chip.named+"')",100);
  85. }
  86. }
  87.  
  88.  
  89. function stopme(chipname)
  90. {if(brOK)
  91. {//alert(chipname)
  92. eval("chip="+chipname);
  93. if(chip.timer1!=null)
  94. {clearTimeout(chip.timer1);}
  95. }
  96. }
  97.