function OpenClose(Id)
{
	Obj = document.getElementById(Id);
	
                if(Obj)
                {
                               if(Obj.style.display == "none")
                               {
							                   Obj.style.display = "block";
											           if(document.getElementById(Id + "_img"))
										{
											document.getElementById(Id + "_img").src = "images/pijl-omlaag.gif";
											
										}
                               }
							   else
							   {
                                               Obj.style.display = "none";
											           if(document.getElementById(Id + "_img"))
										{
											document.getElementById(Id + "_img").src = "images/pijl-rechts.gif";
										}
								}
                }

}

function OpenClose2(Obj)
{
                if(Obj)
                {
                               if(Obj.style.display == "none")
                                               Obj.style.display = "block";
                               else
                                               Obj.style.display = "none";
                }
}