Dynamic Drive DHTML Script- Snow Effect

FF1+ IE5+ Opr7+

Snow Effect

Note: Updated Nov 9th, 05 by DD: Smoother animation, ability to hide snow after x seconds, and option for snow to drop down the full height of page (default is window height).

Description: Decorate your webpage with this great animated document effect! Watch as snow gently trickles down the page, then disappear. The image used is changeable, so snow definitely isn't the only effect this script can render...

Demo: In this demo you're viewing right now, a snow image is used. Click the below for an "Autumn" effect instead, realized using a leaf image:

Autumn effect

Directions

Step 1: Save and upload to your site one of the following two images (depending on the effect you want), by right clicking the image, and choosing "save as":

Alternate snow gif:

Step 2: Having done that, simply add the below chunk of code to the <BODY> section of your page, at the VERY END, outside any other tags:

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<script type="text/javascript"> /****************************************** * Snow Effect Script- By Altan d.o.o. (http://www.altan.hr/snow/index.html) * Visit Dynamic Drive DHTML code library (http://www.dynamicdrive.com/) for full source code * Last updated Nov 9th, 05' by DD. This notice must stay intact for use ******************************************/ function openwindow(){ window.open("autumn_effect.htm","","width=350,height=500") } //Configure below to change URL path to the snow image var snowsrc="snow.gif" // Configure below to change number of snow to render var no = 10; // Configure whether snow should disappear after x seconds (0=never): var hidesnowtime = 0; // Configure how much snow should drop down before fading ("windowheight" or "pageheight") var snowdistance = "pageheight"; ///////////Stop Config////////////////////////////////// var ie4up = (document.all) ? 1 : 0; var ns6up = (document.getElementById&&!document.all) ? 1 : 0; function iecompattest(){ return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body } var dx, xp, yp; // coordinate and position variables var am, stx, sty; // amplitude and step variables var i, doc_width = 800, doc_height = 600; if (ns6up) { doc_width = self.innerWidth; doc_height = self.innerHeight; } else if (ie4up) { doc_width = iecompattest().clientWidth; doc_height = iecompattest().clientHeight; } dx = new Array(); xp = new Array(); yp = new Array(); am = new Array(); stx = new Array(); sty = new Array(); snowsrc=(snowsrc.indexOf("dynamicdrive.com")!=-1)? "snow.gif" : snowsrc for (i = 0; i < no; ++ i) { 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 (ie4up||ns6up) { if (i == 0) { document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><a href=\"http://dynamicdrive.com\"><img src='"+snowsrc+"' border=\"0\"><\/a><\/div>"); } else { document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+snowsrc+"' border=\"0\"><\/div>"); } } } function snowIE_NS6() { // IE and NS6 main animation function doc_width = ns6up?window.innerWidth-10 : iecompattest().clientWidth-10; doc_height=(window.innerHeight && snowdistance=="windowheight")? window.innerHeight : (ie4up && snowdistance=="windowheight")? iecompattest().clientHeight : (ie4up && !window.opera && snowdistance=="pageheight")? iecompattest().scrollHeight : iecompattest().offsetHeight; if (snowdistance=="windowheight"){ doc_height = window.innerHeight || iecompattest().clientHeight } else{ doc_height = iecompattest().scrollHeight } for (i = 0; i < no; ++ i) { // iterate for every dot 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(); } dx[i] += stx[i]; document.getElementById("dot"+i).style.top=yp[i]+"px"; document.getElementById("dot"+i).style.left=xp[i] + am[i]*Math.sin(dx[i])+"px"; } snowtimer=setTimeout("snowIE_NS6()", 10); } function hidesnow(){ if (window.snowtimer) clearTimeout(snowtimer) for (i=0; i<no; i++) document.getElementById("dot"+i).style.visibility="hidden" } if (ie4up||ns6up){ snowIE_NS6(); if (hidesnowtime>0) setTimeout("hidesnow()", hidesnowtime*1000) } </script>

Be sure variable "snowsrc" in the above code correctly references the full URL path to the image used. Enjoy!

Wordpress Users: Step by Step instructions to add ANY Dynamic Drive script to an entire Wordpress theme or individual Post