var tabnum = -1;
function toggletab(tabname) {
	var i;
	for (i = 0; i < tab_names.length; ++i) {
		if (tabname == tab_names[i]) {
			tabnum = i;
			toggle(tabname);
			return;
		}
	}
}
function toggle(tabId) {	
	if (tab_status[tabnum] == 0) {
		document.getElementById(tabId+'_div').style.display='block';
	   	document.getElementById(tabId+'_img').src='images/menos.gif';	
		tab_status[tabnum] = 1;
	} else {
   		document.getElementById(tabId+'_div').style.display='none';
		document.getElementById(tabId+'_img').src='images/mais.gif';	
		tab_status[tabnum] = 0;
		document.location.hash = tabId + "_a";
	}	
}

function switchtotab(name,subtabnum,maxnum) 
{
	var linkname = name + '_link_';	
	var i = 1;
	for (i = 1; (i - 1) != maxnum ; i++)
	{
		document.getElementById(name + '_' + i).className='tab_off';
		document.getElementById(linkname + i).className='tab_off_link';
		document.getElementById(name + '_div_' + i).style.display='none';	
	}
	document.getElementById(name + '_' + subtabnum).className='tab_on';
	document.getElementById(linkname + subtabnum).className='tab_on_link';
	document.getElementById(name + '_div_' + subtabnum).style.display='';
}


function rollgif(imgName,imgSrc) 
{
  if (imgSrc != null)
  {
  document.getElementById('imgName').src="'images/' + imgSrc + '.gif'";
  }
  else
  {
  document.getElementById('imgName').src="'images/' + imgName + '_over.gif'";
  }
}
function rolljpg(imgName,imgSrc) 
{
  if (imgSrc != null)
  {
  document.getElementById('imgName').src="'images/' + imgSrc + '.jpg'";
  }
  else
  {
  document.getElementById('imgName').src="'images/' + imgName + '_over.jpg'";
  }
}