var d = document;
function getElement(id){
	return d.getElementById(id);
}

var contentsList = new Array("yahoo", "google", "amazon", "dic", "it", "nich", "news");
var actionList = new Object();
actionList["yahoo"] = "http://search.yahoo.co.jp/bin/search";
actionList["google"] = "http://www.google.co.jp/custom";
actionList["amazon"] = "http://www.amazon.co.jp/exec/obidos/external-search";
actionList["dic"] = "http://dictionary.goo.ne.jp/search.php";
actionList["it"] = "http://e-words.jp/";
actionList["nich"] = "http://www.media-k.co.jp/jiten/wiki.cgi";
actionList["news"] = "http://news.google.co.jp/news";
actionList["lyrics"] = "http://www2.kget.jp/result.asp";



function changeTab(id) {
	var search_query = "";
	for(i = 0; i < contentsList.length; i++) {
		var contentId = contentsList[i];
		var text = getElement(contentId + "_q");
		if(text.value) {
		search_query = text.value;
		break;
		}
	}
	d.sf.action = actionList[id];
	var box = getElement(id + "tab");
	var form = getElement("form");
	form.innerHTML = box.innerHTML;
	var text = getElement(id + "_q");
	text.value = search_query;
}