function initrequest(url){
	var http_request = false;
	//initialize vars
	var email=document.wr.email.value;
	var name=document.wr.name.value;
	var message=document.wr.message.value;
	var website=document.wr.website.value;
	var captcha_code=document.wr.captcha_code.value;
	var hint="";
	var msg="From: "+name+" (Website: "+website+") "+email+"\n\n"+"--------------------------------------------------------------------------------------------------\n"+"Message:\n"+message;
   	
	var passData="email="+email+"&name="+name+"&message="+message+"&msg="+msg+"&website="+website+"&captcha_code="+captcha_code;

	if (window.XMLHttpRequest) { // Mozilla, Safari, ...
        http_request = new XMLHttpRequest();
            if (http_request.overrideMimeType) {
                http_request.overrideMimeType('text/xml');
            }
        } else if (window.ActiveXObject) { // IE
            try {
                http_request = new ActiveXObject("Msxml2.XMLHTTP");
            } catch (e) {
                try {
                    http_request = new ActiveXObject("Microsoft.XMLHTTP");
                } catch (e) {}
            }
        }
        if (!http_request) {
            alert('Error: Unable to initialize class');
            return false;
        }
        http_request.onreadystatechange = function() { sendrequest(http_request); };
        http_request.open('POST', url, true);
       	http_request.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=UTF-8');
		if (email && name && message && website && captcha_code)
		{
			http_request.send(passData);			
		}else 
		{
			if (!name)
			{
				hint+="<p class=\"err\">&bull; Please fill your <strong>name</strong></p>";			
			}
			if (!email)
			{
				hint+="<p class=\"err\">&bull; Please fill <strong>email address</strong></p>";			
			}			
			if (!message)
			{
				hint+="<p class=\"err\">&bull; Please fill in <strong>message</strong></p>";			
			}
			if (!website)
			{
				hint+="<p class=\"err\">&bull; Please fill in <strong>website</strong></p>";			
			}
			if (!captcha_code)
			{
				hint+="<p class=\"err\">&bull; Please fill in <strong>security image code</strong></p>";			
			}
			
			document.getElementById('hint').innerHTML=hint;	
			
		}
		
}

function sendrequest(http_request) {
		if (http_request.readyState == 4) {
            if (http_request.status == 200) {
				document.getElementById('hint').innerHTML = http_request.responseText;	
				document.getElementById('form_name').value = '';
				document.getElementById('form_email').value = '';
				document.getElementById('form_website').value = 'http://';
				document.getElementById('captcha_code').value = 'enter code here...';
				document.getElementById('form_message').value = '';
			} 
			else {
				HideIndicator()
                document.getElementById('hint').innerHTML = 'Server mengalami gangguan, mohon coba beberapa saat lagi! Terima kasih.';
            }
        }
}