function addEvent(obj,type,fn)
{
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
	} else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
	}
}

function inputfocus()
{
  with(val = document.getElementById('q')) {
    if(val.value == 'Tapez votre question') {
      val.value = '';
    }
  }
}

function inputblur()
{
  with(val = document.getElementById('q')) {
    if(val.value == '') {
      val.value = 'Tapez votre question';
    }
  }
}

function lienpdf()
{
  // target _blank sur le lien PDF
  document.getElementById('lienpdf').target = '_blank';
  
  // Fonction onfocus et onblur
  addEvent(document.getElementById('q'),'focus',inputfocus);
  addEvent(document.getElementById('q'),'blur',inputblur);
}
addEvent(window,'load',lienpdf);