function alphaRender(sender,alpha)
{
    if (sender.filters)
      sender.filters.alpha.opacity=alpha*100
    else
      sender.style.MozOpacity=alpha
}

function changeTxtColor(fromId, color){

	var objFrom = document.getElementById ( fromId ) ;
	objFrom.color = color;
}

function changeArrow(fromId,img){
  
  var objFrom = document.getElementById ( fromId ) ;
  objFrom.src=img;

}