Background Effects >>> Snow.


		<script 
		language="javascript"
		type="text/javascript">

		/* Visit http://www.yaldex.com/ 
		for full source code

		and get more free JavaScript, CSS and DHTML scripts! */

		<!-- Begin

		var 
		no =
		25;
		// snow number

		var 
		speed =
		50;
		// smaller number moves the snow 
		faster

		var 
		snowflake =
		"snow.gif";

		

		var 
		ie4up =
		(document.all)
		?
		1
		:
		0;

		var 
		ns4up =
		!ie4up;

		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
		(ns4up)
		{

		doc_width 
		=
		self.innerWidth;

		doc_height 
		=
		self.innerHeight;

		} 
		else
		if
		(ie4up)
		{

		doc_width 
		=
		document.body.clientWidth;

		doc_height 
		=
		document.body.clientHeight;

		}

		dx 
		=
		new
		Array();

		xp 
		=
		new
		Array();

		yp 
		=
		new
		Array();

		am 
		=
		new
		Array();

		stx 
		=
		new
		Array();

		sty 
		=
		new
		Array();

		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

		

		document.write("<div 
		id=\"dot"+ 
		i +"\" 
		style=\"POSITION: ");

		document.write("absolute; 
		Z-INDEX: "+ 
		i +"; 
		VISIBILITY: ");

		document.write("visible; 
		TOP: 15px; LEFT: 15px;\"><img src=\"");

		document.write(snowflake
		+
		"\" border=\"0\"></div>");

		}

		function 
		snowNS()
		{ 
		// Netscape main animation 
		function

		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();

		doc_width 
		=
		self.innerWidth;

		doc_height 
		=
		self.innerHeight;

		}

		dx[i]
		+= 
		stx[i];

		document.getElementById("dot"+i).style.top
		= 
		yp[i];

		document.getElementById("dot"+i).style.left
		= 
		xp[i]
		+ 
		am[i]*Math.sin(dx[i]);

		}

		setTimeout("snowNS()", 
		speed);

		}

		function 
		snowIE()
		{ 
		// IE main animation function

		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();

		doc_width 
		=
		document.body.clientWidth;

		doc_height 
		=
		document.body.clientHeight;

		}

		dx[i]
		+= 
		stx[i];

		document.all["dot"+i].style.pixelTop
		= 
		yp[i];

		document.all["dot"+i].style.pixelLeft
		= 
		xp[i]
		+ 
		am[i]*Math.sin(dx[i]);

		}

		setTimeout("snowIE()", 
		speed);

		}

		if
		(ns4up)
		{

		snowNS();

		} 
		else
		if
		(ie4up)
		{

		snowIE();

		}

		// End -->

		</script>