function get_map_object() {
		try {
  		if (parent.map==null) {
  			if (window.opener.map!=null) return window.opener.myMap.map;
  		} else {
  			return parent.map.myMap.map;
  		}
    } catch(e) { return null; }
	}
	function hasspeciallegend(bird_id) {
		specials = Array("TETURO","PERPER","PERAPI","MILMIG","MILMIL","GYPBAR","NEOPER","ACCGEN","ACCNIS","AQUCHR","HIEFAS","RALAQU","BUBBUB","ALCATT","OENLEU","SYLCON","SYLBOR","SYLCOM","EMBHOR");
		for (var i = 0; i < specials.length; i++) {
			if(specials[i] == bird_id) return true;
		}
		return false;
	}
	
	function writeLegend() {
		var html = "<div id='legend_title' name='legend_title'></div>";
		html += "<div id='slider' name='slider' class='slider' width='100%' title='Transparčncia'><input class='slider-input' id='slider-input'/></div>";
		html += "Probabilitat d'aparició<br/><br/><img id='legend' name='legend' src='stuff/legends/default.jpg' align='center'/>";
		return html;
	}
	
  function writeLegendHeader(value,title){
  	var html = "<a href='javascript:showLegend(\"toggle\",\"" + title + "\")'>";
  	html += "<img id='legend_img' name='legend_img' src='' hspace='0' vspace='0' border='0' align='right' /></a>";
  	return html;
  }		

	function showBirdMap(bird_id,title){
		
		var map = get_map_object();
		// we had to urlencode title first
		title = unescape(title);
		// we remove + character (global find/replace)
		title = title.replace(/\+/g," ");

    if (map!=null) {
    	map.loadingcount = 0;
			var index = map._getserverindex("ocell");
			
	    if(index != -1) {
	    	if(bird_id != false) {
		    	map.connections[index].setparameter("bird_id",bird_id);
		    	map.connections[index].setvisible("ocell",true);
		    	
		    	// we will have to set the internal legend manually
		    	// not so elegant, but it works
		    	map.connections[index].autolegend = false;
		    	var layerindex = map.connections[index]._getlayerindex("ocell");
		    	
		    	if(hasspeciallegend(bird_id)) {
		    		map.connections[index].sld = "http://oslo.geodata.es/ftp/ocells/php/sld_bird.php?id="+bird_id;
		    		setTimeout("showLegend(true,\"" + title + "\",\"" + bird_id + "\")",1500);
					
					  // set legend for printing
					  map.connections[index].layers[layerindex].legend = "http://oslo.geodata.es/ftp/ocells/stuff/legends/" + bird_id + ".jpg";
		    	} 
		    	else {
		    		map.connections[index].sld = "";
		    		setTimeout("showLegend(true,\"" + title + "\",\"default\")",1500);
		    		
		    		// set legend for printing
					  map.connections[index].layers[layerindex].legend = "http://oslo.geodata.es/ftp/ocells/stuff/legends/default.jpg";
		    	}
		    } else {
		    	map.connections[index].setvisible("ocell",false);
		    	map.connections[index].sld = false;
		    	document.getElementById("map_legend").style.display = "none";
		    	document.getElementById("map_legend_header").style.display = "none";
		    }
		    
		    map.refresh("ocell");

	    }
    }   
  }
  
  function highlightElement(id) {

  	//which layer is it?
  	var layer_code = id.substr(0,3);
  	var layer = "error";
  	switch(layer_code) {
  		case "QD_":
	  		layer = "malla10";
	  		break;
  		case "EIN":
	  		layer = "espais_prot";
	  		break;
  		case "FTP":
	  		layer = "espais_ftip";
	  		break;
  		case "COM":
	  		layer = "comarca";
	  		break;	  		
  		case "MUN":
	  		layer = "municipis";
	  		break;
	  	default:
	  		layer = "malla10";
	  		break;	  	
	  }
	  	
		var map = get_map_object();
		var sld_url = "http://oslo.geodata.es/ftp/ocells/php/sld.php?layer=selected_polygon%26value="+id;
	
	  // get connection
	  var index = map._getserverindex('selected');
	  if (index != -1) {
	
		  // set sld
		  var conn = map.connections[index];
		  conn.sld = sld_url;
		  conn.setparameter("shape",layer);
		  conn.setvisible("selected_polygon", true);
		  
		  //refresh map
		  map.refresh(index);
		}
  	
  }
  
  function showLegend(value,title,speciallegend){

		var map_legend = document.getElementById("map_legend");
		var legend_title = document.getElementById("legend_title");
		var legend_header = document.getElementById("map_legend_header");
		
		if (value == "toggle") value = (map_legend.style.display ? true : false);
		
		if(value) {
			map_legend.style.display = "";
			legend_header.style.display = "";
			legend_title.innerHTML = title;
			legend_header.innerHTML = writeLegendHeader(true,title);
			document.getElementById("legend_img").src = "img/maximize_up.gif";
			//alert("stuff/legends/" + speciallegend + ".png");
			if(speciallegend) document.getElementById("legend").src = "stuff/legends/" + speciallegend + ".jpg";
			else document.getElementById("legend").src = "stuff/legends/default.jpg";
			getstartingalpha();
		}
		else {
			map_legend.style.display = "none";
			legend_header.innerHTML = writeLegendHeader(true,title);
			document.getElementById("legend_img").src = "img/maximize_down.gif";
		}
	}