var http_request = false;

function ajaxRequest(url, parameters, target) {
	parameters += '&targt=' + target;
	http_request = false;
	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			// set type accordingly to anticipated content type
			//http_request.overrideMimeType('text/xml');
			http_request.overrideMimeType('text/html');
		}
	} 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(cms_lang['la_xmlhttp']);
		return false;
	}
	
	http_request.onreadystatechange = function(){
		ajaxResponse(target);
	}

	http_request.open('POST', url, true);
	http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	http_request.setRequestHeader("Content-length", parameters.length);
	http_request.setRequestHeader("Connection", "close");
	http_request.send(parameters);
}

function  ajaxResponse(target) {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			var result = http_request.responseText;
			document.getElementById(target).innerHTML = result;
		}
		else{
			alert(cms_lang['la_xmlrequest']);
		}
	}
}

function sub_pop_show(target, id){
	var div_id = document.getElementById(id).parentNode;
	var div = id;
	var url = document.location.href;
	var end = url.indexOf("php?")+3;
	url = url.substr(0, end);
	id = id.replace('main_', '');
	var params = 'to_do=pop&cont=' + id;
	ajaxRequest('index.php', params, target);
	document.getElementById(target).style.top = div_id.offsetTop + div_id.offsetHeight + 'px';
	document.getElementById(target).style.left = document.getElementById(div).offsetLeft + 'px';
	document.getElementById(target).style.visibility = 'visible';
}

function sub_pop_hide(id){
	document.getElementById(id).style.visibility = 'hidden';
}

function cms_search(target){
	var seek = document.getElementById('seek').value;
	var params = 'to_do=search&seek=' + seek;
	ajaxRequest('index.php', params, target);
}

function cms_subscribe(target){
	var email = document.getElementById('email_news').value;
	var params = 'to_do=news&email_news=' + email;
	ajaxRequest('index.php', params, target);
}