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		k2on = new Image();		k2on.src ="images/nav_conservatories_01.gif"; 
		k3on = new Image();		k3on.src ="images/nav_doors_01.gif";
		k4on = new Image();		k4on.src ="images/nav_facias_01.gif"; 
		
		
		
		
		k1off = new Image();	k1off.src = "images/nav_windows_02.gif";
		k2off = new Image();	k2off.src = "images/nav_conservatories_02.gif";
		k3off = new Image();	k3off.src = "images/nav_doors_02.gif";
		k4off = new Image();	k4off.src = "images/nav_facias_02.gif";
		
			
		
		}
	
	function act(imgname)
	 {
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			document[imgname].src = eval(imgname + "on.src");
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	function inact(imgname)
	{
		if(document.images)
		{
			document[imgname].src = eval(imgname + "off.src");
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	//-->