function getValue(url,varname) {
  
  var i = 0;
  var value = false;
    
  // Firts, split the url by the ?
  var qparts = url.split("?");
  // Check that there is a querystring
  if (qparts.length > 1) {    
    // Then find the querystring, everything after the ?
    var query = qparts[1];
    // Split the query string into variables (separates by &s)
    var vars = query.split("&");
    // Iterate through vars, checking each one for varname
    for (i=0;i<vars.length;i++) {
      // Split the variable by =, which splits name and value
      var parts = vars[i].split("=");
      // Check if the correct variable
      if (parts[0] == varname) {
        value = parts[1];
        break;
      }
    }
    
    if (value && value != false) {
      // Convert escape code
      value = unescape(value);
      // Convert "+"s to " "s
      value.replace(/\+/g," ");
    }
  } 
    
  return value;
}

//dłuższe komunikaty dla użytkownika
function showInfo(html, title) {
  if (!title) title = 'Informacje'
  Ext.MessageBox.show({
       'title': title,
       msg: html,
       buttons: Ext.MessageBox.OK,
       width: 500
  });
}

function isNumber(n) {
  return !isNaN(parseFloat(n)) && isFinite(n);
}

function isInt(value){
  if((parseFloat(value) == parseInt(value)) && !isNaN(value)){
    return true;
  } else {
    return false;
  }
}

function isArray(obj) {
  var ret = false;
  
  if (obj) {
    if (obj.constructor.toString().indexOf('Array') != -1) ret = true;
  }
  return ret;  
}

/* konf nazw z konwencji z '_' na typ wielbłądzi */
function convName(name) {
  
  if (name.length > 0) {
    name = name.substr(0,1).toUpperCase() + name.substr(1);
    for(var i=0; i < name.length; i++) {
      if (i > 0) {
        if (name.charAt(i - 1) == '_') {
          name = name.substr(0,i) + name.substr(i,1).toUpperCase()  + name.substr(i + 1) ;  
        }
      }
    }
    name = name.replace(/_/g,'');
  }
  return name;
}

function val2datastr(val) {
  
  ret = '';
  
  if (val) {
    if (val !== null) {
    
      if (isArray(val)) {
        for(var i=0; i < val.length; i++) {
          if (val[i].getMonth) {
            var m = val[i].getMonth();
            if (m > 0) m += 1;
            var d = val[i].getDate();
            if (d < 10) d = '0' + d;
            if (m < 10) m = '0' + m;  
            
            if (ret) ret += ',';
            ret += val[i].getFullYear() + '-' + m + '-' + d;
          }
        }
      } else {
        ret = val;
      }
    }
  }
  //console.log(ret);
  return ret;
}

function datastr2val(str) {
  
  ret = '';
  
  if (str) {
    if (str !== null) {
      var tabDates = new Array();
      var tabStrDates = str.split(',');
      for(var k=0; k < tabStrDates.length; k++) {
        tabDates[k] = new Date(tabStrDates[k]);
      }
      ret = tabDates;
    }
  }
  
  return ret;
}