var imgCat = new Array();
if (document.images) {
        for (var i=0; i<6; i++) {
        imgCat[i] = new Image;
        imgCat[i].src = eval('"images/btn_" + eval(i) + ".gif"');
        }
}                        
function depressImg(imgNum) {
        if (document.images) {
                var imgName = "btn_" + eval(imgNum);
                var imgLoc = imgNum + 1;
                eval('document.images["' + imgName + '"].src = imgCat["' + imgLoc + '"].src');
        }
}
function releaseImg(imgNum) {
        if (document.images) {
                var imgName = "btn_" + eval(imgNum);
                eval('document.images["' + imgName + '"].src = imgCat["' + imgNum + '"].src');
        }
}
function pageUnderConstr() {
	if (document.images) {
		alert('Page under construction.');
	}
}