var path="/Portals/_default/Skins/JAG/menu/";


normal_home = new Image();
normal_home.src = path+"home_hover.png";

mouseover_home = new Image();
mouseover_home.src = path+"home_normal.png";




normal_about = new Image();
normal_about.src = path+"about_hover.png";

mouseover_about = new Image();
mouseover_about.src = path+"about_normal.png";



normal_endoscopist = new Image();
normal_endoscopist.src = path+"endoscopist_hover.png";

mouseover_endoscopist = new Image();
mouseover_endoscopist.src = path+"endoscopist_normal.png";


normal_nurse = new Image();
normal_nurse.src = path+"nurse_hover.png";

mouseover_nurse = new Image();
mouseover_nurse.src = path+"nurse_normal.png";



normal_units = new Image();
normal_units.src = path+"units_hover.png";

mouseover_units = new Image();
mouseover_units.src = path+"units_normal.png";



normal_eportfolio = new Image();
normal_eportfolio.src = path+"eportfolio_hover.png";

mouseover_eportfolio = new Image();
mouseover_eportfolio.src = path+"eportfolio_normal.png";



normal_Commissioning = new Image();
normal_Commissioning.src = path+"Commissioning_hover.png";

mouseover_Commissioning = new Image();
mouseover_Commissioning.src = path+"Commissioning_normal.png";



<!-- repeat the 4 lines above for any subsequent images. -->

function swap(){
if (document.images){
for (var x=0;
x<swap.arguments.length;
x+=2) {
document[swap.arguments[x]].src = eval(swap.arguments[x+1] + ".src");

}
}
}