function enable_it(){
	if(document.formAanvraag && document.formAanvraag.transnr_clientnr)
	{
		
		document.formAanvraag.transnr_clientnr.disabled=false;
		document.formAanvraag.transnr_provider.disabled=false;
		document.formAanvraag.transnr_nr.disabled=false;
		document.formAanvraag.transnr_requested_date.disabled=false;
		document.formAanvraag.transnr_end_date.disabled=false;
		document.formAanvraag.transnr_termination_date.disabled=false;
		document.formAanvraag.transnr_cancellation_periode.disabled=false;
		document.formAanvraag.transnr_sim.disabled=false;
		
		document.formAanvraag.transnr_clientnr.style.background = "#FFFFCC";
		document.formAanvraag.transnr_provider.style.background = "#FFFFCC";
		document.formAanvraag.transnr_nr.style.background = "#FFFFCC";
		document.formAanvraag.transnr_requested_date.style.background = "#FFFFCC";
		document.formAanvraag.transnr_end_date.style.background = "#FFFFCC";
		document.formAanvraag.transnr_termination_date.style.background = "#FFFFCC";
		document.formAanvraag.transnr_cancellation_periode.style.background = "#FFFFCC";
		document.formAanvraag.transnr_sim.style.background = "#FFFFCC";	
		toggleBox('divNrTransfer', 1);
	}
}
function disable_it(){
	if(document.formAanvraag && document.formAanvraag.transnr_clientnr)
	{
		document.formAanvraag.transnr_clientnr.disabled=true;
		document.formAanvraag.transnr_provider.disabled=true;
		document.formAanvraag.transnr_nr.disabled=true;
		document.formAanvraag.transnr_requested_date.disabled=true;
		document.formAanvraag.transnr_end_date.disabled=true;
		document.formAanvraag.transnr_termination_date.disabled=true;
		document.formAanvraag.transnr_cancellation_periode.disabled=true;
		document.formAanvraag.transnr_sim.disabled=true;
		
		document.formAanvraag.transnr_clientnr.style.background = "#EBEBE3";
		document.formAanvraag.transnr_provider.style.background = "#EBEBE3";
		document.formAanvraag.transnr_nr.style.background = "#EBEBE3";
		document.formAanvraag.transnr_requested_date.style.background = "#EBEBE3";
		document.formAanvraag.transnr_end_date.style.background = "#EBEBE3";
		document.formAanvraag.transnr_termination_date.style.background = "#EBEBE3";
		document.formAanvraag.transnr_cancellation_periode.style.background = "#EBEBE3";
		document.formAanvraag.transnr_sim.style.background = "#EBEBE3";
		toggleBox('divNrTransfer', 0);	
	}
}	

function enable_actua_it(){
	if(document.formAanvraag && document.formAanvraag.actua_type)
	{
		try{
			document.formAanvraag.actua_type.disabled=false;
			document.formAanvraag.actua_type.style.background = "#FFFFCC";
			toggleBox('divActuaInsurance', 1);			
		}
		catch(e)
		{
			return false;
		}
	}
}

function disable_actua_it(){
	if(document.formAanvraag && document.formAanvraag.actua_type)
	{
		try{
			document.formAanvraag.actua_type.disabled=true;
			document.formAanvraag.actua_type.style.background = "#EBEBE3";
			toggleBox('divActuaInsurance', 0);			
		}
		catch(e){
			return false;
		}
	}
}	

function toggleBox(szDivID, iState) // 1 visible, 0 hidden
{
    if(document.layers)	   //NN4+
    {
       document.layers[szDivID].visibility = iState ? "show" : "hide";
	   //var style2 = document.layers[szDivID].style;
	   //style2.display = iState ? "block":"";
    }
    else if(document.getElementById)	  //gecko(NN6) + IE 5+
    {
        var obj = document.getElementById(szDivID);
        obj.style.visibility = iState ? "visible" : "hidden";
		//var style2 = obj.style;
		//style2.display = iState ? "block":"";
    }
    else if(document.all)	// IE 4
    {
        document.all[szDivID].style.visibility = iState ? "visible" : "hidden";
		//var style2 = document.all[szDivID].style;
		//style2.display = iState ? "block":"";
    }
}