
//雪
function snowWrite(){

sx = new Array();
sy = new Array();
sp = new Array();
num = 20;
scrnx = document.body.clientWidth - 40;
scrny = 300;

	for (i=0; i<num; i++){
	
		// レイヤの書き出し
		sx[i] = Math.floor(Math.random()*scrnx);
		sy[i] = Math.floor(Math.random()*scrny);
		sp[i] = Math.floor(Math.random()*5) + 1;
		styl = "<div id='snow"+i+"' style='position:absolute;width:9px;height:9px;z-index:5;"
		styl +="top:"+sy[i]+"px;left:"+sx[i]+"px;' name='snow"+i+"'>"
		styl +="<img src='season/snow.png' />";
		styl +="</div>";

		document.write(styl);
	}
}

function moveSnow(){
	for (i=0; i<num; i++){
		sy[i] += sp[i];
		if (sy[i] > scrny) sy[i] = -10;
		moveLayer("snow"+i,sx[i],sy[i]);
	}
}


// レイヤを移動する
function moveLayer(idName,x,y){

	if(document.getElementById){
		document.getElementById(idName).style.left=x;
		document.getElementById(idName).style.top=y;
	}else if(document.all){
		document.all(idName).style.pixelLeft=x;
		document.all(idName).style.pixelTop=y;
	}else if(document.layers){
		document.layers[idName].moveTo(x,y);
	}

}


// BODY設定
function body(){
if(( navi >=11.01) && ( navi <=12.25)){ 
	document.write('<body style="background:url(season/winter_sky.gif) repeat-x;">');
	} else {
	document.write('<body onLoad=setInterval("moveSnow()",100); style="background:url(season/winter_sky.gif) repeat-x;">');
	snowWrite();
	}
	xwidth2 = (document.body.clientWidth - 20) / 2 ;
	kenroku= xwidth2 - 270 ;
	document.write('<div style="position:absolute; margin-left:'+kenroku+'px; top:10px;">');
	document.write('<img src="season/winter_kenroku.png" width="420" height="320" alt="" /></div>');
}

// メインイメージ
function mainImg(){
	document.write('<div style="position:absolute; margin-left:-20px; margin-top:10px; z-index:5;">');
	greeting(0);
	document.write('</div>');
	document.write('<div style="margin-left:30px; margin-top:38px; margin-bottom:-10px;">');
	document.write('<img src="season/winter_mama01.png" width="253" height="229" alt="" /></div>');
}
