title: Call function on body load javascript?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/4842590/run-function-when-page-is-loaded">run function when page is loaded</a>  </p>
  </blockquote>
  
  
  
  <p>I have a script inside of my body, a relatively long script, which i would like to put in a seperate .js file, then just call the function on body load instead of having the script in the body but i do not know how to call it. Help?</p>
  
  <p>Script:</p>
  
  <pre><code>            &lt;script type="text/javascript"&gt;
              // Set the number of snowflakes (more than 30 - 40 not recommended)
       var snowmax = 35
  
       // Set the colors for the snow. Add as many colors as you like
       var snowcolor = new Array("#ddddff", "#ccccdd", "#f3f3f3", "#f0ffff")
  
       // Set the fonts, that create the snowflakes. Add as many fonts as you like
       var snowtype = new Array("Times", "Arial", "Times", "Verdana")
  
       // Set the letter that creates your snowflake (recommended: * )
       var snowletter = "*"
  
       // Set the speed of sinking (recommended values range from 0.3 to 2)
       var sinkspeed = 0.6
  
       // Set the maximum-size of your snowflakes
       var snowmaxsize = 30
  
       // Set the minimal-size of your snowflakes
       var snowminsize = 8
  
       // Set the snowing-zone
       // Set 1 for all-over-snowing, set 2 for left-side-snowing
       // Set 3 for center-snowing, set 4 for right-side-snowing
       var snowingzone = 1
  
       ///////////////////////////////////////////////////////////////////////////
       // CONFIGURATION ENDS HERE
       ///////////////////////////////////////////////////////////////////////////
  
  
       // Do not edit below this line
       var snow = new Array()
       var marginbottom
       var marginright
       var timer
       var i_snow = 0
       var x_mv = new Array();
       var crds = new Array();
       var lftrght = new Array();
       var browserinfos = navigator.userAgent
       var ie5 = document.all &amp;&amp; document.getElementById &amp;&amp; !browserinfos.match(/Opera/)
       var ns6 = document.getElementById &amp;&amp; !document.all
       var opera = browserinfos.match(/Opera/)
       var browserok = ie5 || ns6 || opera
  
           function randommaker(range) {
               rand = Math.floor(range * Math.random())
               return rand
           }
  
           function initsnow() {
               if (ie5 || opera) {
                   marginbottom = document.body.scrollHeight
                   marginright = document.body.clientWidth - 15
               } else if (ns6) {
                   marginbottom = document.body.scrollHeight
                   marginright = window.innerWidth - 15
               }
               var snowsizerange = snowmaxsize - snowminsize
               for (i = 0; i &lt;= snowmax; i++) {
                   crds[i] = 0;
                   lftrght[i] = Math.random() * 15;
                   x_mv[i] = 0.03 + Math.random() / 10;
                   snow[i] = document.getElementById("s" + i)
                   snow[i].style.fontFamily = snowtype[randommaker(snowtype.length)]
                   snow[i].size = randommaker(snowsizerange) + snowminsize
                   snow[i].style.fontSize = snow[i].size + 'px';
                   snow[i].style.color = snowcolor[randommaker(snowcolor.length)]
                   snow[i].style.zIndex = -1;
                   snow[i].sink = sinkspeed * snow[i].size / 5
                   if (snowingzone == 1) {
                       snow[i].posx = randommaker(marginright - snow[i].size)
                   }
                   if (snowingzone == 2) {
                       snow[i].posx = randommaker(marginright / 2 - snow[i].size)
                   }
                   if (snowingzone == 3) {
                       snow[i].posx = randommaker(marginright / 2 - snow[i].size) + marginright / 4
                   }
                   if (snowingzone == 4) {
                       snow[i].posx = randommaker(marginright / 2 - snow[i].size) + marginright / 2
                   }
                   snow[i].posy = randommaker(2 * marginbottom - marginbottom - 2 * snow[i].size)
                   snow[i].style.left = snow[i].posx + 'px';
                   snow[i].style.top = snow[i].posy + 'px';
               }
               movesnow()
           }
  
           function movesnow() {
               for (i = 0; i &lt;= snowmax; i++) {
                   crds[i] += x_mv[i];
                   snow[i].posy += snow[i].sink
                   snow[i].style.left = snow[i].posx + lftrght[i] * Math.sin(crds[i]) + 'px';
                   snow[i].style.top = snow[i].posy + 'px';
  
                   if (snow[i].posy &gt;= marginbottom - 2 * snow[i].size || parseInt(snow[i].style.left) &gt; (marginright - 3 * lftrght[i])) {
                       if (snowingzone == 1) {
                           snow[i].posx = randommaker(marginright - snow[i].size)
                       }
                       if (snowingzone == 2) {
                           snow[i].posx = randommaker(marginright / 2 - snow[i].size)
                       }
                       if (snowingzone == 3) {
                           snow[i].posx = randommaker(marginright / 2 - snow[i].size) + marginright / 4
                       }
                       if (snowingzone == 4) {
                           snow[i].posx = randommaker(marginright / 2 - snow[i].size) + marginright / 2
                       }
                       snow[i].posy = 0
                   }
               }
               var timer = setTimeout("movesnow()", 50)
           }
  
       for (i = 0; i &lt;= snowmax; i++) {
           document.write("&lt;span id='s" + i + "' style='position:absolute;top:-" + snowmaxsize + "'&gt;" + snowletter + "&lt;/span&gt;")
       }
       if (browserok) {
           window.onload = initsnow
       }
              &lt;/script&gt;
  </code></pre>