var frameActual=1;

/*function initDestaques(numDestaques)
{
	for(i=1; i<=numDestaques;i++)
	{
		if(i!=frameActual)
		{
			divDest = document.getElementById("publicacao_"+i);
			divDest.style.top = 0;
			divDest.style.position = "absolute";
			divDest.style.visibility = "hidden";
		}
		divDestActual = document.getElementById("publicacao_"+frameActual);
		divDestActual.style.top = 0;
		divDestActual.style.position = "absolute";
		divDestActual.style.visibility = "visible";
	}
}

function playDestaques(numDestaques)
{
	frameActual++;
	if(frameActual > numDestaques)
		frameActual=1;
	divDestActual = document.getElementById("publicacao_"+frameActual);
	divDestActual.style.top = 0;
	divDestActual.style.position = "absolute";
	divDestActual.style.visibility = "visible";
	for(i=1; i<=numDestaques;i++)
	{
		if(i!=frameActual)
		{
			divDest = document.getElementById("publicacao_"+i);
			divDest.style.top = 0;
			divDest.style.position = "absolute";
			divDest.style.visibility = "hidden";
		}
	}
	
}*/

var current_banner = 1;
  var total_banners = 0;
  var wait = 0;
  
  function banner_init(){        
  //stop banner change if mouse over one banner   
  	elements = document.getElementById('banners').getElementsByTagName('div');        
	total_banners = elements.length;
	
	for (var i = 0; i < elements.length; i++)        
	{                 
		elements[i].onmouseover = function ()                 
		{                        
			clearTimeout(wait);                
		}                
		elements[i].onmouseout = function ()                 
		{                        
			clearTimeout(wait);                        
			wait = setTimeout('nextBanner()',bannertime);                
		}               
	}        
	//set navigation        
	//elements = document.getElementById('banners').getElementsByTagName('ul')[0].getElementsByTagName('li');        
	total_banners = elements.length; 
	
	for (var i = 0; i < elements.length; i++)         
	{                 
		elements[i].title = i + 1;                
		elements[i].onmouseover = function ()                 
		{                        
			banner(this.title);                        
			clearTimeout(wait);                
		}                
		elements[i].onmouseout = function ()                 
		{                        
			clearTimeout(wait);                        
			wait = setTimeout('nextBanner()',bannertime);                
		}               
	}  
	wait = setTimeout('nextBanner()',bannertime);
  } 
	
function banner(nr)
{        
	clearTimeout(wait);        
	elements = document.getElementById('banners').getElementsByTagName('div');        
	//hide all divs        
	for (var i = 0; i < elements.length; i++)         
	{                 
		if (nr == (i + 1))                
		{                        
			//show selected banner                          
			elements[i].style.display = "block";                
		} 
		else               
		{       
			//hide everything else                        
			elements[i].style.display = "none";                     
		}        
	}        
	wait = setTimeout('nextBanner()',bannertime);
}
	
function nextBanner() 
{        
	if(current_banner < total_banners)         
	{                
		current_banner ++;         
	}       
	else        
	{       
		current_banner = 1;        
	}        
	banner(current_banner);
}




function verifyEmail(){
	var status = false;     
	var emailRegEx = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;
     if (document.boletim.mailUser.value.search(emailRegEx) == -1) {
          alert("Please enter a valid email address.");
     }
     else {
          alert("Woohoo!  The email address is in the correct format and they are the same.");
          status = true;
     }
     return status;
}