//Scripts

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

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_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

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_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

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_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 Menu() {
	document.forms.menu.submit();
}

//E-mail Validation Portuguese

var invalidaddress=new Array()
invalidaddress[0]="hotmail"
invalidaddress[1]="rocketmail"
invalidaddress[2]="yahoo"
invalidaddress[3]="zdnetmail"
//extend or shorten this list if neccessary

var testresults 
function checkemail(){

if (document.newsletter.txt_nome.value=='') {
 alert('Digite seu nome!');
 document.newsletter.txt_nome.focus();
 return false;
}

var invalidcheck=0;
var str=document.newsletter.txt_email.value
var filter=/^.+@.+\..{2,3}$/

if (filter.test(str)){
var tempstring=str.split("@")
tempstring=tempstring[1].split(".")
for (i=0;i<invalidaddress.length;i++){
if (tempstring[0]==invalidaddress[i])
invalidcheck=1
}
if (invalidcheck!=1)
testresults=true
else{
alert("Não aceitamos e-mails deste domínio! Use outro e-mail")
testresults=false
}
}
else{
alert("Digite um e-mail válido!")
testresults=false
}
return (testresults)
}

function checkbae(){
if (document.layers||document.all)
return checkemail()
else
return true
}

// Validacao da Busca

function isNumber(strValue){
   if(isNaN(strValue)){
        alert("O ISBN é composto apenas por números!");
        return 0;
   }
   if(strValue.indexOf(".")>=0){
         alert("O ISBN é composto por um número inteiro, e não decimal!");
         return 0;
    }
   if(strValue.length!=10){
         alert("O ISBN é composto por dez números!");
         return 0;
    }
   return 1;
}

function ValidaForm()
{
        
        if(document.busca.txt_busca.value.length < 2)
        {
                alert("Digite pelo menos 2 caracteres para efetuar a busca!");
				document.busca.txt_busca.focus();
                return 0;
        }
		//if(document.busca.txt_tipo.value == "isbn")
        //{
        //       return(isNumber(document.busca.txt_busca.value))
        //}
		return 1;
}
function Busca() 
{
        if(ValidaForm()==1)
        {
                document.busca.submit();
        }
}


/*
Gradual-Highlight Image Script II- 
By J. Mark Birenbaum (birenbau@ugrad.cs.ualberta.ca)
Permission granted to Dynamicdrive.com to feature script in archive
For full source to script, visit http://dynamicdrive.com
*/

nereidFadeObjects = new Object();
nereidFadeTimers = new Object();

/* object - image to be faded (actual object, not name);
 * destop - destination transparency level (ie 80, for mostly solid)
 * rate   - time in milliseconds between trasparency changes (best under 100)
 * delta  - amount of change each time (ie 5, for 5% change in transparency)
 */

function nereidFade(object, destOp, rate, delta){
if (!document.all)
return
    if (object != "[object]"){  //do this so I can take a string too
        setTimeout("nereidFade("+object+","+destOp+","+rate+","+delta+")",0);
        return;
    }
        
    clearTimeout(nereidFadeTimers[object.sourceIndex]);
    
    diff = destOp-object.filters.alpha.opacity;
    direction = 1;
    if (object.filters.alpha.opacity > destOp){
        direction = -1;
    }
    delta=Math.min(direction*diff,delta);
    object.filters.alpha.opacity+=direction*delta;

    if (object.filters.alpha.opacity != destOp){
        nereidFadeObjects[object.sourceIndex]=object;
        nereidFadeTimers[object.sourceIndex]=setTimeout("nereidFade(nereidFadeObjects["+object.sourceIndex+"],"+destOp+","+rate+","+delta+")",rate);
    }
}


// -----no text select
//function disableselect(e){
//return false
//}
//function reEnable(){
//return true
//}
// -----if IE4+
//document.onselectstart=new Function ("return false")
// -----if NS6
//if (window.sidebar){
//document.onmousedown=disableselect
//document.onclick=reEnable
//}