function newImage(arg) {
     if (document.images) { rslt = new Image(); rslt.src = arg;return rslt;}
}
function changeImages() {
     if (document.images && (preloadFlag == true)) { for (var i=0; i<changeImages.arguments.length; i+=2) { document[changeImages.arguments[i]].src = changeImages.arguments[i+1]; } }
}
var preloadFlag = false;
function preloadImages() {
     if (document.images) {
     tab06_over = newImage("images/tab-over06.gif");
     tab07_over = newImage("images/tab-over07.gif");
     tab08_over = newImage("images/tab-over08.gif");
     tab09_over = newImage("images/tab-over09.gif");
     tab10_over = newImage("images/tab-over10.gif");
     preloadFlag = true;}
}