function CheckCode()
{
	document.getElementById("sendBtn").disabled = true;
	http_request=false;
	//http_request=new XMLHttpRequest();
	if(window.XMLHttpRequest)
	{
		http_request=new XMLHttpRequest();	
		if(http_request.overrideMimeType)
	    {
			http_request.overrideMimeType("text/xml");
		}
	}
	else if(window.ActiveXobject)
	{
		try
		{ 
			http_request=new ActiveXobject("Msxml2.XMLHTTP");
		}
		catch(e)
		{
			try
			{
				http_request=new ActiveXobject("Microsoft.XMLHTTP");    
			}
			catch(e){}
		}
	}	
	if(!http_request)
	{
	// window.alert("不能创建");
	}
	else
	{
	// window.alert("创建成功");
	}
	http_request.onreadystatechange=processRequest;
	http_request.open("GET", 'checkCode.php?code='+document.emailForm.validate.value, true);
	http_request.send(null); 
 }
 
function processRequest()
{
 
	if(http_request.readyState==4)
	{
		if(http_request.status==200)
		{   
			  if(http_request.responseText=="T")
			  {		     
				 /* var contact_name = trim(document.getElementById("contact_name").value);
				  var contact_preson = trim(document.getElementById("contact_preson").value);
				  var contact_email = trim(document.getElementById("contact_email").value);
				  var contact_subject = trim(document.getElementById("contact_subject").value);
				  var contact_text = trim(document.getElementById("contact_text").value);
				  if(contact_name == "")
				  {
					  alert("请輸入公司名稱");
					  document.getElementById("sendBtn").disabled = false;
					  return;
				  }
				  if(contact_preson == "")
				  {
					  alert("请輸入聯絡人");
					  document.getElementById("sendBtn").disabled = false;
					  return;
				  }
				  if(contact_email == "")
				  {
					  alert("请輸入聯絡電郵");
					  document.getElementById("sendBtn").disabled = false;
					  return;
				  }
				  if(contact_subject == "")
				  {
					  alert("请輸入聯絡電話");
					  document.getElementById("sendBtn").disabled = false;
					  return;
				  }
				  if(contact_text == "")
				  {
					  alert("请輸入查詢及意見");
					  document.getElementById("sendBtn").disabled = false;
					  return;
				  }
				  if(!contact_email.match(/[a-zA-Z0-9_-]+\@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-])+/))
				  {
					  alert("请輸入正确的E-Mail地址格式");
					  document.getElementById("sendBtn").disabled = false;
					  return;
				  }
				  if(!contact_subject.match(/^(\(?\d+\)?-?\d+)$|^(\d+-?\d+)$/))
				  {
					  alert("请輸入正确的聯絡電話地址格式");					
					  document.getElementById("sendBtn").disabled = false;
					  return;
				  }*/					 
				  document.emailForm.submit();			
			  }
			  else
			  {				
				  document.getElementById("sendBtn").disabled = false;
				  alert("驗證碼錯誤");
			  }
			   
		 }	  
	}
}

function cImage()
{
	document.getElementById("cpic").src='codeImage.php?' + Math.random();
}