var dt = new Date();

function init_ajax() {
	var AjaxObj = false;
	if(window.XMLHttpRequest){
		AjaxObj = new XMLHttpRequest();
	}else if(window.ActiveXObject){
		AjaxObj=new ActiveXObject("Msxml2.XMLHTTP");
		if (!AjaxObj){
			AjaxObj=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return(AjaxObj);
}

function makeRequest(url,param,formName){
	rstObj = document.getElementById('result-' + formName);
	imgObj = document.getElementById('imgCaptcha-' + formName);

	xmlhttp = init_ajax();
	xmlhttp.open("POST",url + dt.getTime() + dt.getSeconds());
	xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;');
	xmlhttp.onreadystatechange = function(){
		if(xmlhttp.readyState == 4 && xmlhttp.status == 200) {
			switch(xmlhttp.responseText){
				case '1':
					rstObj.innerHTML = "<h4><font color = '#ff0000'>Code was verified successfully, submitting your form now...</font></h4>";
					var frmObj = eval('document.' + formName);
					if(frmObj)
						frmObj.submit();
				break;
				default:
					rstObj.innerHTML = "<h4><font color = '#ff0000'>Sorry, code verification failed! please retry</font></h4>";
					if(xmlhttp.status == 200)
						imgObj.src = 'captcha/create_image.php?' + Math.random() + '&fname=' + formName;
				break;
			}
		}
	}
	xmlhttp.send(param);	
}

function getParam(theForm){
	var url = 'captcha/captcha.php?x=';
	var paramStr = '&' + theForm.txtCaptcha.name + "=" + encodeURIComponent( theForm.txtCaptcha.value ) + '&fname=' + theForm.name + '&tm=' + Math.random(); 
	makeRequest(url,paramStr,theForm.name);
}