function onFocusTxtCerca(id) {
    var v = document.getElementById(id).value;
    
    if(v == "cerca un libro - scrivi una parola chiave") {
        document.getElementById(id).value = "";
        document.getElementById(id).style.fontStyle = "normal";
    }
    
    var key = document.getElementById(id);
    var e;
    var keypress;
    
    key.onkeypress = function(e){
        e=window.event || e;
        keypress=e.charCode || e.keyCode;
        //alert(keypress);
        if (keypress == 13) {
            e.returnValue=false;
            e.cancel = true;
            document.getElementById("headerC_btnCerca").click();
        }
    }   
}

function onBlurTxtCerca(id) {
    var v = document.getElementById(id).value;
    
    if(v == "") {
        document.getElementById(id).value = "cerca un libro - scrivi una parola chiave";
        document.getElementById(id).style.fontStyle = "italic";
    }
}

/******onclick su li******/
/*function menuClick(li){
     var p = li.parentNode;
     var els = p.getElementsByTagName('li');
     for(i=0;i<els.length;i++){
        els[i].className = "";
        var ul = els[i].getElementsByTagName('ul');
        for(x=0;x<ul.length;x++) {
            ul[x].style.display = "none" ;
        }
     }
     li.className = "selected";
     
     var ul = li.getElementsByTagName('ul');
     for(i=0;i<ul.length;i++) {
        ul[i].style.display = "block";
     }
     
     return false;
}*/


/******onclick su a******/
function menuClick(a) {
    var li = a.parentNode;
    var p = a.parentNode.parentNode;
    var els = p.getElementsByTagName('li');
    for(i=0;i<els.length;i++) {
        els[i].className = "";
        var li_ul = els[i].getElementsByTagName('ul');
        for(x=0;x<li_ul.length;x++) {
            li_ul[x].style.display = "none";
        }
    }
    li.className = "selected";
    
    var ul = li.getElementsByTagName('ul');
     for(i=0;i<ul.length;i++) {
        ul[i].style.display = "block";
     }
    
    return false;
}

function clickCerca(el,idArea) {
    //alert(el.nodeName);
    var p = el.parentNode;
    var s = p.getElementsByTagName('select');
    //alert(s[0].nodeName);
    var selIndex = s[0].options[s[0].selectedIndex].value;
    
    /*if (isNaN(idArea)) {
        window.location.href = "ricerca.aspx?idE=" + selIndex + "&idA=9";
    }*/

    window.location.href = "ricerca.aspx?idE=" + selIndex + "&idA=" + idArea;

}

function clickCercaFasciaEta(el,idArea) {
    var p = el.parentNode;
    var s = p.getElementsByTagName('select');
    var selIndex = s[0].options[s[0].selectedIndex].value;

    window.location.href = "ricercaFasciaEta.aspx?idE=" + selIndex + "&idA=" + idArea;

}