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) {
center_new_over = newImage("main/center-new_over.gif");
center_ideas_over = newImage("main/center-ideas_over.gif");
center_about_over = newImage("main/center-about_over.gif");
center_tools_over = newImage("main/center-tools_over.gif");
center_goals_over = newImage("main/center-goals_over.gif");
center_team_over = newImage("main/center-team_over.gif");
center_work_over = newImage("main/center-work_over.gif");
center_email_over = newImage("main/center-email_over.gif");
preloadFlag = true;
}
}