//Detecta si el navegador es ver. 4 o superior
var ie4 = ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4) && (navigator.userAgent.indexOf('Opera') == -1))?1:0;

function isNavigator(navName)
{
    return(navigator.userAgent.indexOf(navName)!=-1)
}

function focusgained(obj)
{
    obj.style.backgroundColor='#FFFFDD'
}

function focuslost(obj)
{
    obj.style.backgroundColor='#FFFFFF'
}

function findObj(objName)
{
    if(ie4) {
        return document.all(objName);
    } else {
        return document.getElementById(objName);
    }
}

//<%-- Conmuta el tamaņo de los areas de texto --%>
function switchSize(tagName)
{
    var h = document.forms[0].elements[tagName].style.height;
    if(h=='' || h=="40px") {
        document.forms[0].elements[tagName].style.height='400px';
    } else {
        document.forms[0].elements[tagName].style.height='40px';
    }
}

//<%-- Activa o desactiva todos los checkbox en un listado de elementos --%>
function switchSelectAllItems(form)
{
    field = form.selectedItems;
    value = form.elements['SelecAllItems'].checked;

    if(typeof field.length == "undefined") {
        form.selectedItems.checked = value;
    } else {
        for (i=0; i<field.length; i++) {
            field[i].checked = value;
        }
    }
}

function MM_swapImgRestore() { //v3.0
    var i,x,a=document.MM_sr;
    for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
    var d=document;
    if(d.images){
        if(!d.MM_p) d.MM_p=new Array();
        var i,j=d.MM_p.length,a=MM_preloadImages.arguments;
        for(i=0; i<a.length; i++) {
            if (a[i].indexOf("#")!=0){
                d.MM_p[j]=new Image;
                d.MM_p[j++].src=a[i];
            }
        }
    }
}

function MM_findObj(n, d) { //v4.01
    var p,i,x;
    if(!d) d=document;
    if((p=n.indexOf("?"))>0&&parent.frames.length) {
        d=parent.frames[n.substring(p+1)].document;
        n=n.substring(0,p);
    }
    if(!(x=d[n])&&d.all) x=d.all[n];
    for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
    for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
    if(!x && d.getElementById) x=d.getElementById(n);
    return x;
}

function MM_swapImage() { //v3.0
    var i,j=0,x,a=MM_swapImage.arguments;
    document.MM_sr=new Array;
    for(i=0;i<(a.length-2);i+=3) {
        if ((x=MM_findObj(a[i]))!=null){
            document.MM_sr[j++]=x;
            if(!x.oSrc) x.oSrc=x.src;
            x.src=a[i+2];
        }
    }
}

function viewPub(url)
{
    openWin(url, 800, screen.height)
}

function openWin(url, userWidth, userHeight)
{
    x = (screen.width - userWidth) / 2;
    y = (screen.height - userHeight) / 2;

    //<%-- ATENCION: La recarga de URL en ventanas modales no funciona bien en IE --%>
    if(isNavigator('Firefox')) {
        window.showModalDialog(url,this,"dialogLeft:"+x+";dialogTop:"+y+"px;dialogWidth:"+userWidth+"px;dialogHeight:"+userHeight+"px;help:off;status:off;resizable:on;");
    } else {
        window.open(url, 'VisorPublicaciones', 'top='+y+',left='+x+',width='+userWidth+',height='+userHeight+',resizable=yes,scrollbars');
    }
}