function MostrarOcultar(divID,linkID){
	var elDiv = GetId(divID); /* Guardo el valor de la propiedad display */
	if(elDiv.style.display==''){/* si es visible lo oculta*/
		elDiv.style.display='none';
		GetId(linkID).className='menuCerrado';
		}else{/* sino lo muestra */
			elDiv.style.display='';
			GetId(linkID).className='menuAbierto';
			}
	}
	
function getCookie(c_name)
			{
				if (document.cookie.length>0)
				{
					c_start=document.cookie.indexOf(c_name + "=")
					if (c_start!=-1)
					{
						c_start=c_start + c_name.length+1
						c_end=document.cookie.indexOf(";",c_start)
						if (c_end==-1) c_end=document.cookie.length
							return unescape(document.cookie.substring(c_start,c_end))
					}
				}
				return null
			}

			function setCookie(c_name,value,expiredays)
			{
				var exdate=new Date()
				exdate.setTime(exdate.getTime()+(expiredays*24*3600*1000))
				document.cookie=c_name+ "=" +escape(value)+
				((expiredays==null) ? "" : "; expires="+exdate)
			}
			
			function switchCSS()
			{
				if (activeStyle == 1)
				{
					document.getElementById('activeCSS').href = 'css/alternativo.css';
					activeStyle = 2;
				}
				else
				{
					document.getElementById('activeCSS').href = 'css/default.css';
					activeStyle = 1;
				}
				setCookie('ActiveCSS', activeStyle, '365');
			}
			
			var activeStyle = 1;
			if(getCookie('ActiveCSS') == '2')
			{
				switchCSS();
			}