// Function added by Robert Gauld Dec 2006
// From: http://www.devarticles.com/c/a/Web-Design-Standards/Matching-div-heights-with-CSS-and-JavaScript/3/
function maxheight() {

	var divs,contDivs,maxHeight,divHeight,d;

	// get all <div> elements in the document
	divs=document.getElementsByTagName('div');
	contDivs=[];

	// initialize maximum height value
	maxHeight=0;

	// iterate over all <div> elements in the document
	for(var i=0;i<divs.length;i++){
		d=divs[i];
		contDivs[contDivs.length]=d;
		// determine height for <div> element
		if(d.offsetHeight) {
			divHeight=d.offsetHeight;
		} else if(d.style.pixelHeight){
			divHeight=d.style.pixelHeight;
		}

		// calculate maximum height
		maxHeight=Math.max(maxHeight,divHeight);
	}
	return maxHeight;
}



//Configure below to change URL path to the falling image
var imgsrc = '';
// Configure below to change the number of images render
var no = 10;
// Configure whether it should disappear after x seconds (0=never):
var hidesnowtime = 0;

var month  =new Date().getMonth();
var dayOfMonth = new Date().getDate();

// December
if (month == 11) {
	// December 24/25/26
	if ((dayOfMonth > 23) && (dayOfMonth < 27)) {
		imgsrc='/pics/falling/stocking.gif';
		//imgsrc='/pics/falling/santa.gif';
		no = 5;
	} else {
		imgsrc='/pics/falling/snow.gif';
	}
}

// 29 Oct to 1 Nov
if ((month == 9 && dayOfMonth > 28) || (month == 10 && dayOfMonth < 2)) {
	imgsrc='/pics/falling/pumpkin.gif';
	no = 7;
}


/******************************************
* 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
******************************************/

// THESE LINES COMMENTED OUT AS THEY ARE SET ABOVE
// ALSO THE if(imgsrc) WRAPPER ADDED AND FUNCTIONS MOVED AROUND
// And maxheight function above incorporated
// BY Robert Gauld	Dec 2006

//Configure below to change URL path to the falling image
//var imgsrc='/pics/<TMPL_VAR NAME="falling">.gif';
// Configure below to change the number of images render
//var no = <TMPL_VAR NAME="falling_no">;
// Configure whether it should disappear after x seconds (0=never):
//var hidesnowtime = <TMPL_VAR NAME="falling_time">;

if(imgsrc) {
	var ie4up = (document.all) ? 1 : 0;
	var ns6up = (document.getElementById&&!document.all) ? 1 : 0;

	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();

	// Get height of image
	// Added by Robert gauld Dec 2006
	var myImage = new Image();
	myImage.src = imgsrc;
	var imageHeight = myImage.height;
	var imageWidth = myImage.width;
	// Finish my addition

	for (i = 0; i < no; ++ i) {  
		dx[i] = 0;                        // set coordinate variables
		xp[i] = Math.random()*(doc_width-imageWidth);  // 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;\"><img src='"+imgsrc+"' border=\"0\"><\/div>");
			} else {
				document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: "+ i +"; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+imgsrc+"' border=\"0\"><\/div>");
			}
		}
	}

	if (ie4up||ns6up){
		snowIE_NS6();
		if (hidesnowtime>0)
		setTimeout("hidesnow()", hidesnowtime*1000)
	}
}

function iecompattest(){
	return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function snowIE_NS6() {  // IE and NS6 main animation function
	doc_width = ns6up?window.innerWidth-10 : iecompattest().clientWidth-10;
	doc_height=maxheight();
	for (i = 0; i < no; ++ i) {  // iterate for every dot
		yp[i] += sty[i];
		if (yp[i] > doc_height-imageHeight) {
			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"
}