function youto(sentaku)
{
	str = sentaku[sentaku.selectedIndex].value;
	youtokey = str;
	if(youtokey=="all"){
		tyukanAry=idAry;
	}
	else{
		tyukanAry=new Array;
		for (a=0;a<idAry.length; a++) {
		str = youtoAry[a];
		youtoyouso = str;
			if (youtokey == youtoyouso) {
			tyukanAry.push(a);
			}
		}
	}

	if(kizonkey=="all"){
		tyukan2Ary=tyukanAry;
	}else{
		tyukan2Ary=new Array;
		for (b=0; b<tyukanAry.length; b++) {
		c = tyukanAry[b];
		d = kizonAry[c];
			if (kizonkey == d) {
			tyukan2Ary.push(c);
			}
		}
	}

	if(bousuikey=="all"){
		tyukan3Ary=tyukan2Ary;
	}else{
		tyukan3Ary=new Array;
		for (f=0; f<tyukan2Ary.length; f++) {
		g = tyukan2Ary[f];
		h = bousuiAry[g];
		if (bousuikey == h) {
		tyukan3Ary.push(g);
			}
		}
	}

	kekkaAry=new Array;
	for (i=0; i<tyukan3Ary.length; i++) {
	j= tyukan3Ary[i];
	k = bukkenAry[j];
	kekkaAry.push(k);
	}

	for (m=0; m<idAry.length; m++) {
		if(m<kekkaAry.length){
			n= kekkaAry[m]+"</a>";
			q=tyukan3Ary[m];
			o= imageAry[q];
			str="sam"+(q+1);
			p=o+n;
			r= o+ '<img src="./images/samnail/'+str+'.jpg" width="40" height="30" alt="サムネール画像" />'+'</a>';
		}else{
			p="";
			r="";
		}
		str="bukken"+(m+1);
		bukkenNo=str;
		str="sam"+(m+1);
		samNo=str;
		samnail = document.getElementById(samNo);
		samnail.innerHTML = r;
		bukkenlink = document.getElementById(bukkenNo);
		bukkenlink.innerHTML = p;
	}

	if(kekkaAry.length==0){
	gaitonashi=document.getElementById("bukken1");
	gaitonashi.innerHTML = "該当する物件がありません";
	}

	tyukanAry=[];
	tyukan2Ary=[];
	tyukan3Ary=[];
	kekkaAry=[];
}