if (document.images){
		
                toc1on = new Image();
                //toc1on.src = "images/alpha_nav/a_1_on.gif";
                toc2on = new Image();
                //toc2on.src = "images/alpha_nav/a_2_on.gif";
                toc3on = new Image();
                //toc3on.src = "images/alpha_nav/a_3_on.gif";
	        toc4on = new Image();
                //toc4on.src = "images/alpha_nav/a_4_on.gif";
                toc5on = new Image();
                //toc5on.src = "images/alpha_nav/a_5_on.gif";

		toc25on = new Image();
                //toc25on.src = "images/alpha_nav/a_6_on.gif";
		
		toc26on = new Image();
                toc26on.src = "images/alpha_nav/a_7_on.gif";

				
				
		toc1off = new Image();
                //toc1off.src = "images/alpha_nav/a_1_off.gif";
                toc2off = new Image();
                //toc2off.src = "images/alpha_nav/a_2_off.gif";
                toc3off = new Image();
                //toc3off.src = "images/alpha_nav/a_3_off.gif";
	        toc4off = new Image();
                //toc4off.src = "images/alpha_nav/a_4_off.gif";
                toc5off = new Image();
                //toc5off.src = "images/alpha_nav/a_5_off.gif";

                toc25off = new Image();
                //toc25off.src = "images/alpha_nav/a_6_off.gif";
		
                toc26off = new Image();
                toc26off.src = "images/alpha_nav/a_7_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 ) ; 
        }