behaviour_rules[".galeria a img"] = function(element){
			element.onclick = function(evt){
				var evento = evt ? evt : window.event;
				var target = evento.target ? evento.target : evento.srcElement;
				var image=target.src.substr(target.src.lastIndexOf("/")+1);
				var image=getURLParam(target.parentNode.parentNode.href,"foto")
				Ajax("componente/ajax_getimagen?id=1818&imagen="+image,cambiaFoto)
				return false;
			}
		};
		
		function getURLParam(strHref,strParamName){
		  var strReturn = "";
		  if ( strHref.indexOf("?") > -1 ){
		    var strQueryString = strHref.substr(strHref.indexOf("?")).toLowerCase();
		    var aQueryString = strQueryString.split("&");
		    for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
		      if (aQueryString[iParam].indexOf(strParamName.toLowerCase() + "=") > -1 ){
		        var aParam = aQueryString[iParam].split("=");
		        strReturn = aParam[1];
		        break;
		      }
		    }
		  }
		  return unescape(strReturn);
		}
		
		function cambiaFoto(){
			if(request.readyState==4){
				var doc=request.responseXML.documentElement
				
				var foto=document.getElementById("foto_actual_galeria").firstChild;
				foto.src="../files/upload/"+doc.getAttribute("imagen");
				//foto.height=doc.getAttribute("alto");
			}
		}
		
		function Ajax(query,func){
			if (window.XMLHttpRequest) request=new XMLHttpRequest()
			else if (window.ActiveXObject) request=new ActiveXObject("Microsoft.XMLHTTP")
			
			if (request!=null)
			{
				request.onreadystatechange=func;
				request.open("GET",query,true)
				request.send(null)
			}
		}