function tabInit(){
	tabCrawl(null);
}
function tabCrawl(idx){
	var d = document;
	var ul = d.getElementById("change-bt");
	if(ul){
		var li = ul.getElementsByTagName('li');
	}else{
		return;
	}
	var i;
	var targets = ["freeword", "area", "address"];
	for(i = 0; i < li.length; i++){
		var a = li[i].getElementsByTagName("a")[0];
		var tgt = targets[i];
				
		if(idx == null){
			a.onclick = switchTab;
			a.tgt = targets[i]
		}else if(idx == tgt){
//			li[i].className = "selected";
			a.style.backgroundPosition = "0px -37px";
			d.getElementById("search-" + idx).style.display = "block";
		}else{
			a.style.backgroundPosition = "0px 0px";
			li[i].className = "normal";
			d.getElementById("search-" + tgt).style.display = "none";
		}
	}
}

function switchTab(e){
	var tgt = this.tgt;
	switch(tgt){
		case "area":
			document.selectForm.radio_search.value = "area";
		break;
		case "address":
			document.selectForm.radio_search.value = "addr";
		break;
		default:
			document.selectForm.radio_search.value = "freeword";
		break;
	}
	tabCrawl(tgt);
	return false;
}

addEvent(window,"load",tabInit);