// JavaScript Document

/******************************************
* 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="images/snow3.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;
	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)
}

// Pre-load images
if (document.images) {

  image1on = new Image();
  image1on.src = "images/header_menu_about_f2.jpg";
  image1off = new Image();
  image1off.src = "images/header_menu_about_f1.jpg";

  image2on = new Image();
  image2on.src = "images/header_menu_gear_f2.jpg";
  image2off = new Image();
  image2off.src = "images/header_menu_gear_f1.jpg";

  image3on = new Image();
  image3on.src = "images/header_menu_gallery_f2.jpg";
  image3off = new Image();
  image3off.src = "images/header_menu_gallery_f1.jpg";

  image4on = new Image();
  image4on.src = "images/header_menu_events_f2.jpg";
  image4off = new Image();
  image4off.src = "images/header_menu_events_f1.jpg";
  
  image5on = new Image();
  image5on.src = "images/header_menu_contact_f2.jpg";
  image5off = new Image();
  image5off.src = "images/header_menu_contact_f1.jpg";

  image6on = new Image();
  image6on.src = "images/header_menu_home_f2.jpg";
  image6off = new Image();
  image6off.src = "images/header_menu_home_f1.jpg";

}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = 
      eval(changeImages.arguments[i+1] + ".src");
    }
  }
}