function toggle_visibility_big(id,id2) {
	var e = document.getElementById(id);
   if(e.style.display == 'block'){
	  e.style.display = 'none'; 
	  document.getElementById(id2).src ='_modules/pics/arrow_big1.gif';
   }
   else{
	  e.style.display = 'block';
	  document.getElementById(id2).src ='_modules/pics/arrow_big2.gif';
	}
}

function toggle_visibility(id,id2) {
   var e = document.getElementById(id);
   if(e.style.display == 'block'){
	  e.style.display = 'none'; 
	  document.getElementById(id2).src ='_modules/pics/arrow1.gif';
   }
   else{
	  e.style.display = 'block';
	  document.getElementById(id2).src ='_modules/pics/arrow2.gif';
	}
}


function toggle_visibility_simple(id) {
   var e = document.getElementById(id);
   if(e.style.display == 'block'){
	  e.style.display = 'none'; 
   }
   else{
	  e.style.display = 'block';
	}
}

function setCookie(name,value,days) {
	if (days) {
 		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = ";expires="+date.toGMTString();
	} else {
 		expires = "";
	}
	document.cookie = name+"="+value+expires+";path=/";
}

function toggle_visibility_cookie(id,id2) {
   var e = document.getElementById(id);
   if(e.style.display == 'block'){
	  e.style.display = 'none'; 
	  document.getElementById(id2).src ='_modules/pics/arrow1.gif';
	  setCookie(id,'off',30);
   }
   else{
	  e.style.display = 'block';
	  document.getElementById(id2).src ='_modules/pics/arrow2.gif';
	  setCookie(id,'on',30);
	  //alert ('set cookie '+ id);
	}
}