function change_about_pane(selectID)
{
	// get the index of the selected option
	var idx = selectID;
	// get the value of the selected option
	switch (idx)
	{
		case "about_pane_louvres":
			document.getElementById("about_pane_description").innerHTML = '<span style="font-size:19px"><br /><br />At Bridge Louvre we aim to provide our clients with the very best in aluminium weather louvres and air distribution equipment.</span>';
			document.getElementById("AboutPane").style.backgroundImage = "url('/images/home_page/main_about_background.jpg')";

			// Set Louvres tab
			document.getElementById("about_pane_louvres").className = "about_pane_large";

			// Reset Brise Soleil tab
			document.getElementById("about_pane_brise_soleil").className = "about_pane_small";
			document.getElementById("about_pane_brise_soleil").style.padding = "";
			document.getElementById("about_pane_brise_soleil").style.margin = "";
			document.getElementById("about_pane_brise_soleil").style.width = "150px";
			
			// Reset Duco Louvres tab
			document.getElementById("about_pane_duco_louvres").className = "about_pane_small";
			document.getElementById("about_pane_duco_louvres").style.padding = "";
			document.getElementById("about_pane_duco_louvres").style.margin = "";

			break;
		case "about_pane_brise_soleil":
			document.getElementById("about_pane_description").innerHTML = 'At Bridge Louvre we aim to provide our clients with the very best in aluminium weather louvres and air distribution equipment.<br /><br /><span style="font-size: 10px; font-weight:400">Established in 1994, Bridge Louvre Company has wide ranging experience in manufacturing and installing louvre systems throughout the UK. All our louvre systems are manufactured from our own extrusions in our Stalybridge factory, allowing full control of the manufacturing process and a rapid turn round on orders.</span><br /><br />Our estimating department can usually provide a fully detailed quotation within 24 hours of receipt of an enquiry, or even the same day.';
			document.getElementById("AboutPane").style.backgroundImage = "url('/images/home_page/main_about_background2.jpg')";

			// Reset Louvres tab
			document.getElementById("about_pane_louvres").className = "about_pane_small";
			
			// Set Brise Soleil tab
			document.getElementById("about_pane_brise_soleil").className = "about_pane_large";
			document.getElementById("about_pane_brise_soleil").style.padding = "30px 46px 30px 18px";
			document.getElementById("about_pane_brise_soleil").style.margin = "0px 0px 0px 7px";
			document.getElementById("about_pane_brise_soleil").style.width = "167px";
			
			// Reset Duco Louvres tab
			document.getElementById("about_pane_duco_louvres").className = "about_pane_small";
			document.getElementById("about_pane_duco_louvres").style.padding = "";
			document.getElementById("about_pane_duco_louvres").style.margin = "";

			break;
		case "about_pane_duco_louvres":
			document.getElementById("about_pane_description").innerHTML = 'In addition to our own designs and products, we also manufacture the Ducogrille and Ducowall louvre products from aluminium extrusions supplied by our Belgian partner, Duco.<br /><br /><span style="font-size: 10px; font-weight:400">Duco \'Ventilation & Sun Control\', founded in 1991, is based in a 22,000 m² highly modern factory along the E40 Ostend-Calais motorway in Veurne (Belgium). Duco has become a leading manufacturer in Europe of "natural" ventilation and sun control systems for a healthy, comfortable and energy efficient indoor climate. Duco has won several international innovation, management and export Awards.</span><br /><br />Core products are kept in stock to allow the same delivery period as our  standard louvre products.';
			document.getElementById("AboutPane").style.backgroundImage = "url('/images/home_page/main_about_background3.jpg')";
			
			// Reset Louvres tab
			document.getElementById("about_pane_louvres").className = "about_pane_small";
			
			// Reset Brise Soleil tab
			document.getElementById("about_pane_brise_soleil").className = "about_pane_small";
			document.getElementById("about_pane_brise_soleil").style.padding = "";
			document.getElementById("about_pane_brise_soleil").style.margin = "";
			document.getElementById("about_pane_brise_soleil").style.width = "150px";
			
			// Set Duco Louvres tab
			document.getElementById("about_pane_duco_louvres").className = "about_pane_large";
			document.getElementById("about_pane_duco_louvres").style.padding = "10px 50px 15px 31px";
			document.getElementById("about_pane_duco_louvres").style.margin = "0px 0px 0px 9px";
			break;
		default:
				break;
	}
	return false;
}