function changeSearchTarget()
{
	var myForm = document.getElementById("SearchForm");
	var targetValue = document.getElementById("radiobuttonTarget").value;
	var searchKey = document.getElementById("Keyword").value;
	if(targetValue == "searchGoogle")
	{
		window.location.target="_blank";
		window.open("http://www.google.cn/search?complete=1&hl=zh-CN&newwindow=0&q=" + encodeURIComponent(searchKey) + "+site%3Aeightour.com&meta=&aq=f");
		/*window.location.href = "http://www.google.cn/search?complete=1&hl=zh-CN&newwindow=1&q=" + encodeURIComponent(searchKey) + "+site%3Aeightour.com&meta=&aq=f";*/
	}
	else
	{
		myForm.submit();
	}
}