// 通过Select ID得到数据
function $SelectValue(id)
{
	var obj = document.getElementById(id);
	return obj.options[obj.selectedIndex].value;
}

function CheckIsEmptyOut(_this)
{
	if(_this.value == '')
	{
		_this.value = '搜索关键词';
		document.getElementById("wikiItem").href = "http://wiki.hexun.com/search.aspx?t=";
		document.getElementById("wikiSw").href = "http://wiki.hexun.com/wikisearch.aspx?sw=";
	}
	else
	{
		document.getElementById("wikiItem").href = "http://wiki.hexun.com/search.aspx?t=" + _this.value;
		document.getElementById("wikiSw").href = "http://wiki.hexun.com/wikisearch.aspx?sw=" + _this.value;
	}
}
function CheckIsEmptyOver(_this)
{
	if(_this.value == '搜索关键词')
		_this.value = '';
}