//Configure below to change URL path to the snow image
  //var snowsrc="images/animation/snow_ani.gif";
  
  var snowsrcs;
  snowsrcs = new Array();
  snowsrcs[0]="images/animation/snow_ani.gif";
  snowsrcs[1]="images/animation/snow_ani.gif";
  snowsrcs[2]="images/animation/snow_ani.gif";
  snowsrcs[3]="images/animation/snow_ani.gif";
  
  
  
  // Configure below to change number of snow to render
  var no = 20;
  // Configure whether snow should disappear after x seconds (0=never):
  var hidesnowtime = -1;
  var hidesnowtimeprevious=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
	}

	function changeShowState()
	{
		if(hidesnowtime==-1) 
		{
//			hidesnowtime=hidesnowtimeprevious;
//			snowControl();
			location.reload(true);
		}
		else
		{
			hidesnowtimeprevious=hidesnowtime;
			hidesnowtime=-1;
			document.getElementById("but1").src="images/showflowers.gif";
			snowControl();

		}
	}

  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;
  }

if (ie4up||ns6up) 
{	
//document.write("<input id='but1' name='but1' type='image' src='images/hideflowers.gif' onclick='changeShowState();'>");
}

function buildFlakes()
{
  	  dx = new Array();
	  xp = new Array();
	  yp = new Array();
	  am = new Array();
	  stx = new Array();
	  sty = new Array();
	  //snowsrc=(snowsrc.indexOf("www.weatherfriends.co.uk")!=-1)? "snow.gif" : snowsrc
	  y=0;


	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://www.weatherfriends.co.uk\"><img src='"+snowsrcs[y]+"' 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='"+snowsrcs[y]+"' border=\"0\"><\/div>");
	      		}
		  		if(y==3)
					{y=0;} 
		  		else 
					{y=y+1;}
	    	}
	  }
}


  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)
		if (window.snowcontroltimer) clearTimeout(snowcontroltimer)
		for (i=0; i<no; i++) document.getElementById("dot"+i).style.visibility="hidden"
	}

	function showsnow(){
		//if (window.snowtimer) clearTimeout(snowtimer)
		for (i=0; i<no; i++) document.getElementById("dot"+i).style.visibility="visibile"
	}


function snowControl()
{
	if (ie4up||ns6up)
	{
		if(hidesnowtime == -1)
		{
			hidesnow();
		}
		else if (hidesnowtime>0)
		{  
			snowIE_NS6();
			setTimeout("hidesnow()", hidesnowtime*1000);
		}
		else
		{
				snowIE_NS6();
		}
	}
	snowcontroltimer=setTimeout("snowControl()",10);
}

buildFlakes();
snowControl();