function changecmobo()
{
if(document.getElementById("adv_pro_type").value=="Sales")
{
	document.getElementById("div_sales").style.display="block";
	document.getElementById("div_lettings").style.display="none";
	//alert("kkk");
	return true;
}
if(document.getElementById("adv_pro_type").value=="Lettings")
{
	document.getElementById("div_sales").style.display="none";
	document.getElementById("div_lettings").style.display="block";
	//alert("uuu");
	return true;
	
}
}