function saveParams(){
	var argv=saveParams.arguments;
	var argc=saveParams.arguments.length;
	var liste = '';
	var value = '';
                      var toSave = new Object();
	
	for(i=0;i<argc;i++){
		var arg = argv[i];
		value = decodeURI(getURLParam(arg.param));   // Addwords detection
		if(value == null || value == '') {
			value = decodeURI(getRefererParam(arg.param));    // Natural search detection
		}
//alert(arg.param+":"+arg.cookieName+" => "+value+" - "+toSave[arg.cookieName]+" - "+getCookieParam(arg.cookieName));
		if(value != '') {
			toSave[arg.cookieName] = value ;
		} else if(toSave[arg.cookieName] != null && toSave[arg.cookieName] != '') {
			// leaves toSave[arg.cookieName] unchanged
		} else {
			toSave[arg.cookieName] = getCookieParam(arg.cookieName) ;
		}
//alert("======> "+toSave[arg.cookieName]);
                                           //toSave[arg.cookieName] = (value == '')? getCookieParam(arg.cookieName) : value;
		//liste += '&'+arg.cookieName+'=';
		//liste += (value == '')? getCookieParam(arg.cookieName) : value;
	}
	
	for(i in toSave) {
		liste += '&'+i+'=';
		liste += toSave[i];
	}
	EcrireCookie("arvalParam", liste, null, "/");
}


function setValue(inputName, name){
	document.getElementById(inputName).value = getCookieParam( name );
}

function getCookieParam( name ){ 
	name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
	var regexS = "[\\?&]"+name+"=([^&#]*)";
	var regex = new RegExp( regexS );
	var results = regex.exec(LireCookie("arvalParam"));
	
	return (results == null) ? "" : results[1];
}

function getURLParam( name ){
  return extractParam(window.location.href, name);
}

function getRefererParam( name ){
  var refe = document.referrer;
  if(refe == null) {
     return '';
  }
  return extractParam(refe , name);
}

function extractParam( urlValue, name ){
  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( urlValue );
  
  return (results == null) ? "" : results[1];
}

function EcrireCookie(nom, valeur){
	var argv=EcrireCookie.arguments;
	var argc=EcrireCookie.arguments.length;
	var expires=(argc > 2) ? argv[2] : null;
	var path=(argc > 3) ? argv[3] : null;
	var domain=(argc > 4) ? argv[4] : null;
	var secure=(argc > 5) ? argv[5] : false;
	document.cookie=nom+"="+escape(valeur)+
	((expires==null) ? "" : ("; expires="+expires.toGMTString()))+
	((path==null) ? "" : ("; path="+path))+
	((domain==null) ? "" : ("; domain="+domain))+
	((secure==true) ? "; secure" : "");
}


function getCookieVal(offset){
	var endstr=document.cookie.indexOf (";", offset);
	if (endstr==-1) endstr=document.cookie.length;
	return unescape(document.cookie.substring(offset, endstr)); 
}


function LireCookie(nom){
	var arg=nom+"=";
	var alen=arg.length;
	var clen=document.cookie.length;
	var i=0;
	while (i<clen){
		var j=i+alen;
		if (document.cookie.substring(i, j)==arg) return getCookieVal(j);
		i=document.cookie.indexOf(" ",i)+1;
		if (i==0) break;
	}
	return null; 
}


//saveParams('ppcseid','ppcsekeyword', 'q');
saveParams( { param:"ppcseid", 	cookieName:"campainCode"},
	 { param:"ppcsekeyword",  cookieName:"keywords" },
	 { param:"q", 		cookieName:"keywords"});