/*
*   La funcionalidad que se presenta en este javascript es simplemente para ir por un pedazo de HTML
*   e insertarlo en un DIV para ser mostrado.
*/

var isIE;
var req;

function initRequest() {
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
    } else if (window.ActiveXObject) {
        isIE = true;
        req = new ActiveXObject("Microsoft.XMLHTTP");
    }
}

/*
*   Función para actualizar un elemento HTML con el contenido de una URL arbitraria.
*   
*/
function updateContentFromURI(sFromUrl, oTargetElement){
    try{
        initRequest();
        oTargetElement.style.cursor = "wait";    
        req.open("GET", sFromUrl, true);    
        function requestHandler() {
            if (req.readyState == 4) {
                if (req.status == 200) {
                    oTargetElement.style.cursor = "auto";
                    oTargetElement.innerHTML = req.responseText;
                } else if (req.status == 204){
                    alert("STATUS: " + req.status);
                }
            
            };
        };
        req.onreadystatechange = requestHandler;
        req.send(null);
        oTargetElement.style.cursor = "auto";   
    }catch(e){
        oTargetElement.style.cursor = "auto";
        throw e;
    };
}

function ShowDiv(divid)
{
   if (document.layers) document.layers[divid].visibility="show";
   else document.getElementById(divid).style.visibility="visible";
}

function HideDiv(divid)
{
   if (document.layers) document.layers[divid].visibility="hide";
   else document.getElementById(divid).style.visibility="hidden";
}

function toggleDiv(id) {					
    var nc = (document.layers) ? true:false
    var ie = (document.all) ? true:false
    var n6 = (document.getElementById) ? true:false
    if(ie) {
        if (document.all[id].style.visibility == "visible") {
            document.all[id].style.visibility = "hidden";					
            eval("document.all['"+ id +"'].style.display = 'none'");
        } else {
            document.all[id].style.visibility = "visible"
            eval("document.all['"+ id +"'].style.display = 'block'");
        }
    } else if(nc) {
        if (document.layers[id].visibility == "visible") {
            document.layers[id].visibility = "hidden";					
            eval("document.layers['"+ id +"'].style.display = 'none'");
        } else {
            document.layers[id].visibility = "visible"
            eval("document.layers['"+ id +"'].style.display = 'block'");
        }			
    } else if(n6) {
        if (document.getElementById(id).style.visibility == "visible") {
            document.getElementById(id).style.visibility = "hidden";					
            eval("document.getElementById('"+ id +"').style.display = 'none'");
        } else {
            document.getElementById(id).style.visibility = "visible"
            eval("document.getElementById('"+ id +"').style.display = 'block'");
        }
    }
}