var surl = {
	news : "http://news.sogou.com/news",
	web : "http://www.sogou.com/web",
	music : "http://mp3.sogou.com/music.so",
	pic : "http://pic.sogou.com/pics",
	video : "http://v.sogou.com/v",
	bbs : "http://bbs.sogou.com/searchIn.do"
};

var _tabIds = ["lt1", "lt2", "lt3", "lt4"];
var _currentTab = "lt1";
var _tabAssigns = {
	web : 'lt1',
	music : 'lt2',
	pic : 'lt3',
	video : 'lt4'
};

function searchChange(A) {
	var _tid = _tabAssigns[A];
	if (_tid != _currentTab) {
		document.getElementById(_currentTab).className = "";
		document.getElementById(_tid).className = "active";
		document.getElementById(_tid).blur();
		_currentTab = _tid;
	}
	document.getElementById("sf").action = surl[A];
}