function changevisibility(obj) {
	var object = document.getElementById(obj);
	if (object.style.display == 'block') {
		object.style.display = 'none';
	} else {
		object.style.display = 'block';
	}
}

function doajax(){
	var xmlhttp=false;
	/* for IE...*/
	try {
		xmlhttp = new ActiveXObject('Msxml2.XMLHTTP');
	}
	catch(e) {
		try{
			xmlhttp = new ActiveXObject('Microsoft.XMLHTTP');
		}
		catch(E){
			xmlhttp = false;
		}
	}
	/* for Mozilla...*/
	if(!xmlhttp && typeof XMLHttpRequest!='undefined'){
		xmlhttp = new XMLHttpRequest();
	}
	return xmlhttp;
}

function showBanner(idbanner){
	var request=doajax();
	if(request){
		request.onreadystatechange=function(){
			if(request.readyState==4){
				var destiny=document.getElementById("currentbanner2");
				var controls=document.getElementById("currentbanner1");
				destiny.innerHTML=request.responseText;
				destiny.style.display="block";
				controls.style.display="none";
			}
		}
		request.open("GET", "banner.php?banner="+idbanner, true);
		request.send(null);
	}else{
		alert("El objeto httprequest no se pudo crear.");
	}
}


function optionSearch(line, show1, hide1, hide2, hide3){
	var request=doajax();
	if(request){
		request.onreadystatechange=function(){
			if(request.readyState==4){
				var destiny=document.getElementById(show1);
				var control1=document.getElementById(hide1);
				var control2=document.getElementById(hide2);
				var control3=document.getElementById(hide3);
        //alert(show1);
				destiny.innerHTML=request.responseText;
				destiny.style.display="inline";
				control1.style.display="none";
				control2.style.display="none";
				control3.style.display="none";
			}
		}
		request.open("GET", show1+".php?line="+line, true);
		request.send(null);
	}else{
		alert("El objeto httprequest no se pudo crear.");
	}
}