var t;

function retirar_foto(num, total,tipo){
    if(tipo=='foto_ant'){
		if(num>0){
			$('#local_imagem').fadeOut();
			var t=setTimeout("foto_ant("+num+","+total+")",1000);
		}
	}

	if(tipo=='foto_dep'){
		if(num<=total){
			$('#local_imagem').fadeOut();
			var t=setTimeout("foto_dep("+num+","+total+")",1000);
		}
	}
}

function botoes(img_ant,img_dep,total){

   if(img_ant>=1){ document.getElementById('seta_esq').style.display="block"; }else{ document.getElementById('seta_esq').style.display="none"; }
   if(img_dep<=total){ document.getElementById('seta_dir').style.display="block"; }else{ document.getElementById('seta_dir').style.display="none"; }

}

function foto_ant(num, total){
		 clearTimeout(t);
		 
		 var xmlHttp;
		 try{
			 //firefox, opera 8.0+,safari
			 xmlHttp=new XMLHttpRequest();
		 } catch(e){
			 // internet explorer
			 try{
				 xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
			 } catch (e){
				 try{
					 xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
				 } catch (e) {
					 alert("Your browser does not support AJAX!");
					 return false;
				 }
			 }
		 }
		 
		 
		 xmlHttp.onreadystatechange=function(){
			 if(xmlHttp.readyState==4){
				 //alert(xmlHttp.responseText);
				 document.getElementById('local_imagem').innerHTML=xmlHttp.responseText;
				 img_ant--;
				 img_dep--;
				 
				 botoes(img_ant,img_dep,total);
				 $('#local_imagem').fadeIn();
			 }
		 }
		 
		 url='conteudos/ajax_carrega_foto.php?num='+num+'&gal='+categoria;
		 //alert(url);
		 xmlHttp.open("GET",url,true);
		 xmlHttp.send(null);
}

function foto_dep(num, total){
		 clearTimeout(t);

		 var xmlHttp;
		 try{
			 //firefox, opera 8.0+,safari
			 xmlHttp=new XMLHttpRequest();
		 } catch(e){
			 // internet explorer
			 try{
				 xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
			 } catch (e){
				 try{
					 xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
				 } catch (e) {
					 alert("Your browser does not support AJAX!");
					 return false;
				 }
			 }
		 }
		 
		 
		 xmlHttp.onreadystatechange=function(){
			 if(xmlHttp.readyState==4){
				 //alert(xmlHttp.responseText);
				 document.getElementById('local_imagem').innerHTML=xmlHttp.responseText;
				 img_ant++;
				 img_dep++;
				 
				 botoes(img_ant,img_dep,total);
				 $('#local_imagem').fadeIn();
			 }
		 }
		 
		 url='conteudos/ajax_carrega_foto.php?num='+num+'&gal='+categoria;
		 //alert(url);
		 xmlHttp.open("GET",url,true);
		 xmlHttp.send(null);
}

function bts(){
	document.getElementById('opcs').style.display='block';
	
	for(i=2;i<=total_fotos;i++){
		$('#ft'+i).fadeOut(500);
	}
}

/**/
x=0;
andamento=0;
total=1132;

function puxa(){
	    if(total>2){ andamento=2; x+=2; }else{ andamento=total-x; x+=andamento; }
		document.getElementById('local_imagem').scrollLeft+=andamento;
		
		if(x<=total){ var t=setTimeout("puxa()",5); }else{ clearTimeout(t); }
}

function move_fotos(){
    x=0;
	andamento=0;
	puxa();
}