function checkAnswerForm(form){
if(form.txtAnswer.value=="")
	{
	    alert("请输入您问题答案！");
	    return false;
	}
else{
	document.getElementById("subbtn").disabled=true;
	form.submit();
}
} 
function checkForm(form)
{
    if(form.searchTxt.value=="")
	{
	    alert("请输入您要查询的问题关键词");
	    return false;
	}
	return true;
}
function checkLoginForm(form)
{
    if(form.username.value=="" || form.userpass.value=="")
	{
	    alert("Sorry，登录的资料没填定完整");
		return false;
	}
	return true;
}
function checkPhone(strPhone) { 
var phoneRegWithArea = /^[0][1-9]{2,3}-[0-9]{5,8}$/; 
var phoneRegNoArea = /^[1-9]{1}[0-9]{5,8}$/; 
if( strPhone.length > 9 ) {
    if( phoneRegWithArea.test(strPhone) ){return true; }else{return false;}
}else{
    if(phoneRegNoArea.test(strPhone)){return true; }else{return false;}
}
}

function isNumber(s){ 
var regu = "^[0-9]+$"; 
var re = new RegExp(regu); 
if (s.search(re) != -1) { return true;} else { return false;} 
} 

function checkMobile(s){ 
var regu =/^[1][3,5][0-9]{9}$/; 
var re = new RegExp(regu); 
if (re.test(s)) { 
return true; 
}else{ 
return false; 
} 
} 

function checkEmail(strEmail) { 
//var emailReg = /^[_a-z0-9]+@([_a-z0-9]+\.)+[a-z0-9]{2,3}$/; 
var emailReg = /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/; 
if( emailReg.test(strEmail) ){ return true; }else{ return false; } 
}