function checkEmail()
{
	 var form=document.forms["enquiry"];
	var temp =form.address;
	var myreg = /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;
	if(temp.value!="")
	{
		if(!myreg.test(temp.value))
		{
		alert('Please input a correct email address!');
		temp.value="";
		temp.focus();
		return false;
		}else{
			return true;
		}
	}
}


function checkinput(form,lang)
{
	    var form=document.forms["enquiry"];
        if(form.name.value=="")
        {
                if(lang=="cn"){
					alert("請輸入您的名稱!");
				}else{
					alert("Please input your name!");
				}
				
                form.name.focus();
                return false;
        }
        if(form.address.value=="")
        {
			 if(lang=="cn"){
					 alert("請輸入您的電郵地址!");
				}else{
					alert("Please input your email address!");
				}
                form.address.focus();
                return false;
        }
		
	  if(form.subject.value=="")
        {
			 if(lang=="cn"){
					alert("請輸入您的咨詢主題!");
				}else{
					alert("Please input your qnquiry subject!");
				}
              
                form.subject.focus();
                return false;
        }
        if(form.message.value=="")
        {
			if(lang=="cn"){
					alert("請輸入您的咨詢內容!");
				}else{
					alert("Please input your qnquiry content!");
				}               
                form.message.focus();
                return false;
        }
		
      
		return true;
}

function submitform(form,lang){
		if(checkinput(form,lang)){
			document.forms[form].submit();
		}
		
}