function imgLoad(imgname) {
	this.nml = new Image();
	this.nml.src = "images/" + imgname + ".gif";
	this.ovr = new Image();
	this.ovr.src = "images/" + imgname + "_ovr.gif";
}

var nav_2008humanresources = new imgLoad("nav_2008humanresources");
var nav_companyinfo = new imgLoad("nav_companyinfo");
var nav_home = new imgLoad("nav_home");
var nav_photogallery = new imgLoad("nav_photogallery");
var nav_roomtoread = new imgLoad("nav_roomtoread");
var nav_yourthoughts = new imgLoad("nav_yourthoughts");
var btn1_gp = new imgLoad("btn1_gp");
var btn1_nc = new imgLoad("btn1_nc");
var btn1_rtr = new imgLoad("btn1_rtr");
var btn2_c = new imgLoad("btn2_c");
var btn2_sc = new imgLoad("btn2_sc");
var btn3_cv = new imgLoad("btn3_cv");
var btn3_ec = new imgLoad("btn3_ec");