function datacheck(RdIndex){  
	document.forms[0].s_type[RdIndex].checked=true;
}


function oncheck(){
	var wrong = 0;
	var strWrong = "";
	
	if(document.forms[0].s_type[0].checked == true && document.forms[0].chufa.value == "") {
		strWrong = strWrong + "出发城市不能为空\n"
		document.forms[0].chufa.OnFocus = true;
	}
		
	if(document.forms[0].s_type[0].checked == true && document.forms[0].daoda.value == "") {
		strWrong = strWrong + "到达城市不能为空\n"
	}
	
	if(document.forms[0].s_type[1].checked == true && document.forms[0].checi.value == "") {
		strWrong = strWrong + "车次名称不能为空\n"
	}
		
	if(document.forms[0].s_type[2].checked == true && document.forms[0].chezhan.value == "") {
		strWrong = strWrong + "车站名称不能为空\n"
	}

	if (strWrong != "") {
		alert(strWrong);
		return false;
	}
	

}