function clearText(thefield){
  if(thefield.defaultValue==thefield.value){
    thefield.value="";
    thefield.style.color="red";
  };
};

function putText(thefield){
  if(thefield.value==""){
    thefield.value=thefield.defaultValue;
    thefield.style.color="black";
  };
};

function GetXmlHttpObject() {
        var xmlHttp = null;
        try {
                // Firefox, Opera 8.0+, Safari
                xmlHttp = new XMLHttpRequest();
        } catch (e) {
                // Internet Explorer
                try {
                        xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
                } catch (e) {
                        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
                }
        }
        return xmlHttp;
}

function showPage(task, query, webid) {
        if (task.length == 1 || query.length < 3) {
                document.getElementById("ajax").innerHTML="";
                document.getElementById("ajax").style.visibility = 'hidden';
                return;
        } else
                document.getElementById("ajax").style.visibility = 'visible';
        xmlHttp=GetXmlHttpObject()
        if (xmlHttp == null) {
                alert ("Your browser does not support AJAX!");
                return;
        }
        var url = "ajaxpage.php?task="+task+"&query="+query+"&webid="+webid;
        //alert(url);
        xmlHttp.onreadystatechange = stateChanged;
        xmlHttp.open("GET", url, true);
        xmlHttp.send(null);
}

function stateChanged() {
        if (xmlHttp.readyState==4) {
                document.getElementById("ajax").innerHTML=xmlHttp.responseText;
        }
}