Bremst das Schnee-Script das System?

[Gregor]

Hallo!
Ich habe u.g. JS als externe .js auf meiner Seite. Es handelt sich um ein 08/15-Schnee-Script :) Allerdings scheint es, dass das System sich verlangsamt: Wenn ich auf einen Link auf der "schneienden" Seite klicke, passiert erstmal gar nix! Das könnt ihr auch selbst auf www.tvgbasketball.de sehen. Hoffentlich könnt ihr mir helfen oder gg. nen anderes Script empfehlen?!
Vielen Dank im Voraus,

Gregor

// Hier das Script:
var no = 20;                   // number of snowflakes
var speed = 10;                // the smaler, the faster snowflakes
var snowflake = "images/snow.gif";    // picture source
var ns4b = (document.layers) ? 1 : 0;   // Netscape4.x
var b4up = (document.all) ? 1 : 0;      // MSIE4, Opera5, Netccape5
var dx, xp, yp;                // coordinate and position variables
var am, stx, sty;              // amplitude and step variables
var snowobj;
var i, doc_width = 800, doc_height = 600;

if (ns4b) {
   doc_width  = self.innerWidth;
   doc_height = self.innerHeight;
} else if (b4up) {
   doc_width  = document.body.clientWidth;
   doc_height = document.body.clientHeight;
} else {
   b4up = 1;                   // 800x600 screen-default
}// if

dx = new Array();
xp = new Array();
yp = new Array();
am = new Array();
stx = new Array();
sty = new Array();
snowobj = new Array();

for (i=0; i<no; ++i) {         // iterate for every snowflake
   dx[i] = 0;                  // set coordinate variables
   xp[i] = Math.random()*(doc_width-50); // set position variables
   yp[i] = Math.random()*doc_height;
   am[i] = Math.random()*20;             // set amplitude variables
   stx[i] = 0.02 + Math.random()/10;     // set step variables
   sty[i] = 0.7 + Math.random();         // set step variables
   if (ns4b) {                           // set layers
      document.write("<LAYER NAME="flake"+ i +"" LEFT="15" "
      + "TOP="15" VISIBILITY="show"><IMG SRC=""
      + snowflake +"" BORDER=0></LAYER>");
   } else if (b4up) {
      document.write("<DIV ID="flake"+ i +"" STYLE=""
      + "position:absolute; z-index:"+ i +"; visibility:visible; "
      + "top:15px; left:15px;"><IMG SRC=""+ snowflake
      + "" BORDER=0></DIV>");
      snowobj[i] = eval (document.getElementById("flake"+i).style);
   }//if
}//for

function snowNS() {            // Netscape4 main animation function
   for (i=0; i<no; ++i) {      // iterate for every snowflake
      yp[i] += sty[i];
      if (yp[i] > doc_height-50) {
         xp[i] = Math.random()*(doc_width-am[i]-30);
         yp[i] = 0;
         stx[i] = 0.02 + Math.random()/10;
         sty[i] = 0.7 + Math.random();
      }//if
         dx[i] += stx[i];
         document.layers["flake"+i].top = yp[i];
         document.layers["flake"+i].left = xp[i]
            + am[i]*Math.sin(dx[i]);
      }//for
   setTimeout("snowNS()", speed);
}//snowNS

function snowDocument() {      // MSIE4, Opera5, Netscape5 main
   for (i=0; i<no; ++i) {      // iterate for every flake
      yp[i] += sty[i];
      if (yp[i] > doc_height-50) {
         xp[i] = Math.random()*(doc_width-am[i]-30);
         yp[i] = 0;
         stx[i] = 0.02 + Math.random()/10;
         sty[i] = 0.7 + Math.random();
      }//if
      dx[i] += stx[i];
      snowobj[i].top  = yp[i];
      snowobj[i].left = xp[i] + am[i]*Math.sin(dx[i]);
   }//for
   setTimeout("snowDocument()", speed);
}//snowDocument

if (ns4b) {                   // Netscape4
   snowNS();
} else if (b4up) {            // MSIE4, Opera5, Netscape5
   snowDocument();
}//if