//Validação se um email se encontra no formato legal
function checkEmail(email){
    var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
    if (!filter.test(email)) {
	return false;
    }else{
	return true;
    }
}

function handleKeyPress(e,form){
    var key=e.keyCode || e.which;
    if (key==13){
	e.cancelBubble = true;
	e.returnValue = false;
	if (e.stopPropagation) {
	    e.stopPropagation();
	    e.preventDefault();
	}
	validate_form_newsletter('form_newsletter');
    }
}

function change_language(id_lingua){
    document.form_language.language.value = id_lingua;
    document.form_language.submit();
}

function changeImg(imgUrl){
    $('#imgBig').attr("src", imgUrl);
    $('#aimg').attr("href", imgUrl);
}

//limpa o texto do span
function cleanSpan(span) {
    if(document.getElementById(span).innerHTML!="") {
	document.getElementById(span).innerHTML = "";
    }
}

//slide das imagens do hotel
function slideit(vl){
    if (vl != ''){
	document.images.slide.src=vl;
	break_loop = true;
    }else {
	if (!break_loop){
	    if (contador == 0){
		return;
	    }
	    var image=new Image();
	    image.src=arr[step];
	    imageVar=eval("image.src");
	    document.images.slide.src=imageVar;
	    document.getElementById('img1').href=imageVar;
	    if (step<contador-1){
		step++;
	    }else{
		step=0;
	    }
	    //call function "slideit()" every 2.5 seconds
	    setTimeout("slideit('')",2500);
	}
    }
}

//slide das imagens do header
function slideitfront(){
    if (contadorf == 0){
	return;
    }
    var image=new Image();
    image.src=arrf[stepf];
    imageVar=eval("image.src");
    document.images.slidehead.src=imageVar;
    document.images.slidehead.alt=arrt[stepf];
    if (stepf<contadorf-1){
	stepf++;
    }else{
	stepf=0;
    }
    setTimeout("slideitfront()",5000);
}