function checkform(){
  var f1 = document.getElementById('formfield1');
  var f2 = document.getElementById('formfield2');
  var ret = true;
  if(f1.value.length < 3){
    document.getElementById("formlabel1").style.color = 'red';
    f1.onfocus = function(){
      document.getElementById("formlabel1").style.color = '#444';
    }
    ret = false;
  }
  if(f2.value.length < 5){
    document.getElementById("formlabel2").style.color = 'red';
    f2.onfocus = function(){
      document.getElementById("formlabel2").style.color = '#444';
    }
    ret = false;
  }
  if(!ret){
    document.getElementById("formfail").style.display = 'block';
  }
  return ret;
}

function resetform(isNL){
  document.getElementById('formfield1').value = '';
  document.getElementById('formfield2').value = '';
  if(!isNL){
    document.getElementById('formfield3').value = '';
  }
}

window.document.onresize = init;

function init(){
  ks_$('main').style.height = ks_wDim().y - 400 + 'px';
}