一个非常漂亮的网页特效，雪花，下雪了！

给你一个很漂亮的，源程序也很短。把下面那段放进BODY就行了。可以放在头部，也可以放在尾部，也可以自己见一个DIY静态。。放在里面！

演示地址：www.t5200.com

1. <style>
   
2. .drop { position: absolute; width: 3;  filter: flipV(), flipH(); font-size: 40; color: blue }
   
3. </style>
   
4. <script language="javascript">
   
5. 
   
6. snow = false;    // false-rain;   true-snow
   
7. snowsym = " * "  //These are the symbols for each
   
8. rainsym = " * "  //You can put images here.
   
9. howmany = 15     //How many drops/snowflakes?
   
10. 
    
11. /**************Do not need to change anything below***********/
    
12. if(snow){sym = snowsym; speed=5; angle=6; drops=howmany}
    
13. else{sym = rainsym; speed=3; drops=howmany; angle=6}
    
14. movex = -speed/angle; movey = speed; count = 0;
    
15. 
    
16. function moverain(){
    
17. for(move = 0; move < drops; move++){
    
18. xx[move]+=movex;  yy[move]+=mv[move];
    
19. hmm = Math.round(Math.random()*1);
    
20. if(xx[move] < 0){xx[move] = maxx+10;}
    
21. if(yy[move] > maxy){yy[move] = 10;}
    
22. drop[move].left = xx[move]
    
23. drop[move].top = yy[move]+document.body.scrollTop;
    
24. }setTimeout('moverain()','1')}
    
25. 
    
26. </script>
    
27. <script language="javascript">
    
28. 
    
29. if (document.all){
    
30. drop = new Array(); xx = new Array(); yy = new Array(); mv = new Array()
    
31. ly = "document.all[\'"; st = "\'].style"
    
32. for(make = 0; make < drops; make++){
    
33. document.write('<div id="drop'+make+'" class=drop>'+sym+'</div>');
    
34. drop[make] = eval(ly+'drop'+make+st);
    
35. maxx = document.body.clientWidth-40
    
36. maxy = document.body.clientHeight-40
    
37. xx[make] = Math.random()*maxx;
    
38. yy[make] = -100-Math.random()*maxy;
    
39. drop[make].left = xx[make]
    
40. drop[make].top = yy[make]
    
41. mv[make] = (Math.random()*5)+speed/16;
    
42. drop[make].fontSize = (Math.random()*10)+20;
    
43. if(snow){col = '#336699'}else{col = 'green'}
    
44. drop[make].color = col;
    
45. }
    
46. window.onload=moverain
    
47. }
    
48. </script>

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