function getURLParam(strParamName){
  var strReturn = "";
  var strHref = window.location.href;
  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 initImg() {
	var id = getURLParam('id');
	if (id == "") {
		id="2";
	}
	var img = "templates/urbion/img/";
	switch(id)
	{
	case "46":
	case "47":
	case "48":
	case "49":
	case "50":
	case "51":
		img = img + "img01l.jpg";
		break;
	case "52":
	case "58":
	case "53":
	case "57":
		img = img + "img02l.jpg";
		break;
	case "54":
		img = img + "img03l.jpg";
		break;
	case "55":
	case "56":
		img = img + "cesty.jpg";
		break;
	default:
		img = img + "img01l.jpg";
		break;
	}
	document.getElementById('sideImage').src=img;

	var map = document.getElementsByTagName('span');
	if (map != null) {
		var mapStr = '';
		if (id == "56") {
			mapStr = '<iframe src="mapbb.html" frameborder="0" height="250" scrolling="no" width="400"></iframe>';
		}
		if (id == "55") {
			mapStr = '<iframe src="map.html" frameborder="0" height="250" scrolling="no" width="400"></iframe>';
		}
		for (var i=0; i<map.length; i++) {
			if(map[i].firstChild.data == 'map') {
				map[i].innerHTML = mapStr;
			}
		}
	}
}