/******************************************
* 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
******************************************/
  
	//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 = 30;
	// 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";

	var snow_flg = 0;
///////////Stop Config//////////////////////////////////

	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; 

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

	function init() { 
		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;
			yp[i] = Math.random()*1024;
			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: -100px; 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: -100px; 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;
		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(){
		snow_flg = 0;
		if (window.snowtimer) clearTimeout(snowtimer)
		for (i=0; i<no; i++) document.getElementById("dot"+i).style.visibility="hidden";
	}

	function swnowstart() {
		init();
	}

	function snowon() {

		if (snow_flg == 0) {
			for (i=0; i<no; i++) document.getElementById("dot"+i).style.visibility="visible";
			if (ie4up||ns6up){
				snowIE_NS6();
					if (hidesnowtime>0) {
						setTimeout("hidesnow()", hidesnowtime*1000)
					}
				}
		}

		snow_flg = 1;
	}

	function snowoff() {
		hidesnow();
	}