if (document.images){
		
				toc1on = new Image();
                toc1on.src = "../images/nav/cab_on.gif";
				toc2on = new Image();
                toc2on.src = "../images/nav/counter_on.gif";
				toc3on = new Image();
                toc3on.src = "../images/nav/win_on.gif";
				toc4on = new Image();
                toc4on.src = "../images/nav/door_on.gif";
				toc5on = new Image();
                toc5on.src = "../images/nav/hw_on.gif";
				toc6on = new Image();
                toc6on.src = "../images/nav/appliance_on.gif";		
				toc7on = new Image();
                toc7on.src = "../images/nav/fire_on.gif";		
				toc8on = new Image();
                toc8on.src = "../images/nav/flooring_on.gif";			
	
				toc1off = new Image();
                toc1off.src = "../images/nav/cab_off.gif";
				toc2off = new Image();
                toc2off.src = "../images/nav/counter_off.gif";
				toc3off = new Image();
                toc3off.src = "../images/nav/win_off.gif";
				toc4off = new Image();
                toc4off.src = "../images/nav/door_off.gif";
				toc5off = new Image();
                toc5off.src = "../images/nav/hw_off.gif";
				toc6off = new Image();
                toc6off.src = "../images/nav/appliance_off.gif";	
				toc7off = new Image();
                toc7off.src = "../images/nav/fire_off.gif";	
				toc8off = new Image();
                toc8off.src = "../images/nav/flooring_off.gif";			
		
				
        }

function img_act(imgName) {
        if (document.images) {
                imgOn = eval(imgName + "on.src");
                document [imgName].src = imgOn;
        }}

function img_inact(imgName) {
        if (document.images) {
                imgOff = eval(imgName + "off.src");
                document [imgName].src = imgOff;
        }}
function openWin( windowURL, windowName, windowFeatures ) { 
                return window.open( windowURL, windowName, windowFeatures ) ; 
        }