/* This javascript loads images into cache and determines 
which image is displayed on a mouseover.  a (black) for 
off and b (red) for on */

if (navigator.userAgent.substring (8,9) >= "3")
        { 
	btn_search1a=new Image();
        btn_search1a.src="pix/search_triada.jpg";
        btn_search1b=new Image();
        btn_search1b.src="pix/search_triadb.jpg";
	btn_search2a=new Image();
        btn_search2a.src="pix/search_alamancea.jpg";
        btn_search2b=new Image();
        btn_search2b.src="pix/search_alamanceb.jpg";
	btn_search3a=new Image();
        btn_search3a.src="pix/search_trianglea.jpg";
        btn_search3b=new Image();
        btn_search3b.src="pix/search_triangleb.jpg";
        }
        
function mouseOn(imgName)
        {
        if (navigator.userAgent.substring (8,9) >= "3")
                {
                document[imgName].src=eval(imgName+"b.src");
                }
        }
                
function mouseOff(imgName)
        {
        if (navigator.userAgent.substring (8,9) >= "3")
                {   
                document[imgName].src=eval(imgName+"a.src");
                }
        }