function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function getQueryVariable(variable) { 
  var query = window.location.search.substring(1); 
  var vars = query.split("&"); 
  for (var i=0;i<vars.length;i++) { 
    var pair = vars[i].split("="); 
    if (pair[0] == variable) { 
      return pair[1]; 
    } 
  } 
  return '';
} 

function xmlhttpPost(strURL,query) {
	var ajaxRequest;  // The variable that makes Ajax possible!
	
	try{
		// Opera 8.0+, Firefox, Safari
		ajaxRequest = new XMLHttpRequest();
	} catch (e){
		// Internet Explorer Browsers
		try{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e){
				// Something went wrong				
				return false;
			}
		}
	}
	// Create a function that will receive data sent from the server
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState == 4){
			//alert('from php:'+ ajaxRequest.responseText );
		}
	}

	var dummy = Math.random();
	dummy =  Math.round(dummy*10000);
	strURL = strURL + '?dummy=' + dummy + '&' + query;
		
	ajaxRequest.open("GET", strURL, true);
	ajaxRequest.send(null); 
}

function setSrcCookie() {    

	var value = getQueryVariable('src')
	if (value != '') {

	var ec = readCookie('src');
	if ( ec != value ) {		
		var query = 'src=' + value + '&t=0';		
		xmlhttpPost('src/src.php',query);
	}

	createCookie('src',value,90);	
	}
}

function setDownloadCookie() {    

	var dwn = readCookie('dwn');
	if ( dwn == null ) {

	var ec = readCookie('src');
	if ( ec == null ) ec = 'none';

	var query = 'src=' + ec + '&t=1';		
	xmlhttpPost('src/src.php',query);

	createCookie('dwn','1',90);
	}

}

function setBuyCookie() {    
		 
	var ec = readCookie('src');
	if ( ec != null ) {

//	var buy = readCookie('buy');
//	if ( buy == null ) {
		var query = 'src=' + ec + '&t=2';		
		xmlhttpPost('src/src.php',query);

//		createCookie('buy','1',90);
//	}
	}
}