if (document.images) {
blank_off = new Image(298,187); blank_off.src="http://alergiamedica.com/sorbonne/blank.gif"
blank_over = new Image(298,187); blank_over.src="http://alergiamedica.com/sorbonne/blank_over.jpg"
}
function turn_off(ImageName) {
if (document.images != null) {
document[ImageName].src = eval(ImageName + "_off.src");
}
}
function turn_over(ImageName) {
if (document.images != null) {
document[ImageName].src = eval(ImageName + "_over.src");
}
}