function showSubMenu( menu ){

	var html = "";

	if( menu == 'glass'){
	
		html += "<div id= \"topsubmenuArrow_glass\"></div><div id= \"topsubmenu\"><div id=\"submenuLinks\">";
		html += "<a href=\"glass.htm\" >stained glass</a><a href=\"glass.htm\" >splash backs</a>";
		html += "<a href=\"glass.htm\" >mirrors</a><a href=\"glass.htm\" >tables</a><a href=\"glass.htm\" >bevelled</a>";
		html += "<a href=\"glass.htm\" >sandblasted</a><a href=\"glass.htm\" >crystals</a>";
		html += "<a href=\"traditionalportfolio.htm\" >our work - previous projects</a>";
		html += "</div></div>";	
	}
	
	else if( menu == 'windows'){
	
		html += "<div id= \"topsubmenuArrow_windows\"></div><div id= \"topsubmenu\"><div id=\"submenuLinks\">";
		html += "<a href=\"windows.htm\" >upvc windows</a><a href=\"windows.htm\" >upvc windows with stained glass</a> <a href=\"windows.htm\" >wooden windows</a>";
		html += "</div></div>";	
	}
	
	
	else if( menu == 'doors_windows'){
	
		html += "<div id= \"doortopsubmenuArrow_windows\"></div><div id= \"doortopsubmenu\"><div id=\"doorsubmenuLinks\">";
		html += "<a href=\"http://www.specialistglassco.co.uk/windows.htm\" >upvc windows</a><a href=\"http://www.specialistglassco.co.uk/windows.htm\" >upvc windows with stained glass</a> <a href=\"http://www.specialistglassco.co.uk/windows.htm\" >wooden windows</a>";
		html += "</div></div>";	
	}
	
	
	if( menu == 'doors_glass'){
	
		html += "<div id= \"doortopsubmenuArrow_glass\"></div><div id= \"doortopsubmenu\"><div id=\"doorsubmenuLinks\">";
		html += "<a href=\"http://www.specialistglassco.co.uk/glass.htm\" >stained glass</a><a href=\"http://www.specialistglassco.co.uk/glass.htm\" >splash backs</a>";
		html += "<a href=\"http://www.specialistglassco.co.uk/glass.htm\" >mirrors</a><a href=\"http://www.specialistglassco.co.uk/glass.htm\" >tables</a><a href=\"glass.htm\" >bevelled</a>";
		html += "<a href=\"http://www.specialistglassco.co.uk/glass.htm\" >sandblasted</a><a href=\"http://www.specialistglassco.co.uk/glass.htm\" >crystals</a>";
		html += "<a href=\"http://www.specialistglassco.co.uk/traditionalportfolio.htm\" >our work - previous projects</a>";
		html += "</div></div>";	
	}
	
	
	if( menu == 'doors_products'){
	
		html += "<div id= \"doortopsubmenuArrow_products\"></div><div id= \"doortopsubmenu\"><div id=\"doorsubmenuLinks\">";
		html += "<a href=\"doors_traditional.htm\" >period doors</a><a href=\"doors_traditional.htm\" >traditional doors</a>";
		html += "<a href=\"doors_modern.htm\" >modern doors</a><a href=\"doors_modern.htm\" >contemporary doors</a>";
		html += "<a href=\"doors_traditional.htm\" >victorian</a><a href=\"doors_traditional.htm\" >edwardian</a><a href=\"doors_traditional.htm\" >1930s</a>";
		html += "<a href=\"doors_traditional.htm\" >product list</a>";
		html += "</div></div>";	
	}
	
	if( menu == 'doors_extras'){
	
		html += "<div id= \"doortopsubmenuArrow_extras\"></div><div id= \"doortopsubmenu\"><div id=\"doorsubmenuLinks\">";
		html += "<a href=\"#\" >stained glass</a><a href=\"glass.htm\" >splash backs</a>";
		html += "<a href=\"#\" >mirrors</a><a href=\"glass.htm\" >tables</a><a href=\"glass.htm\" >bevelled</a>";
		html += "<a href=\"#\" >sandblasted</a><a href=\"glass.htm\" >crystals</a>";
		html += "<a href=\"traditionalportfolio.htm\" >our work - previous projects</a>";
		html += "</div></div>";	
	}
	
	
	
	else if( menu == 'doors'){
	
		html += "<div id= \"topsubmenuArrow_doors\"></div><div id= \"topsubmenu\"><div id=\"submenuLinks\">";
		html += "<a href=\"http://www.specialistdoorsco.co.uk\" >period doors</a><a href=\"http://www.specialistdoorsco.co.uk\" >traditional doors</a>";
		html += "<a href=\"http://www.specialistdoorsco.co.uk\" >modern doors</a><a href=\"http://www.specialistdoorsco.co.uk\" >contemporary doors</a>";
		html += "<a href=\"http://www.specialistdoorsco.co.uk\" >victorian</a><a href=\"doors.htm\" >edwardian</a><a href=\"http://www.specialistdoorsco.co.uk\" >1930s</a>";
		html += "<a href=\"http://www.specialistdoorsco.co.uk/doors_traditional.htm\" >product list</a>";
		html += "</div></div>";	
	}
	
	
	else if( menu == 'glass_projects'){
	
		html += "<div id= \"topsubmenuArrow_glass\"></div><div id= \"topsubmenu\"><div id=\"submenuLinks\">";
		html += "<a href=\"#\" >stained glass</a><a href=\"glass.htm\" >splash backs</a>";
		html += "<a href=\"#\" >mirrors</a><a href=\"glass.htm\" >tables</a><a href=\"glass.htm\" >bevelled</a>";
		html += "<a href=\"#\" >sandblasted</a><a href=\"glass.htm\" >crystals</a>";
		html += "<a href=\"sg1.htm\" style=\"color:#333\" >our work - previous projects</a>";
		html += "</div></div>";	
	}
	
	
	var submenu = document.getElementById('submenu');
	submenu.innerHTML = html;
		
		
		
	
	




}