function preloadImgs() {

	img_one_on = new Image();
	img_two_on = new Image();
	img_three_on = new Image();
	img_four_on = new Image();
	img_one_off = new Image();
	img_two_off = new Image();
	img_three_off = new Image();
	img_four_off = new Image();
	img_one_def = new Image();
	img_two_def = new Image();
	img_three_def = new Image();
	img_four_def = new Image();
	img_one_chk = new Image();
	img_two_chk = new Image();
	img_three_chk = new Image();
	img_four_chk = new Image();

	img_one_on.src = "../images/navigation/about_us_on.gif";
	img_two_on.src = "../images/navigation/news_on.gif";
	img_three_on.src = "../images/navigation/membership_on.gif";
	img_four_on.src = "../images/navigation/committees_on.gif";
	img_one_off.src = "../images/navigation/about_us_off.gif";
	img_two_off.src = "../images/navigation/news_off.gif";
	img_three_off.src = "../images/navigation/membership_off.gif";
	img_four_off.src = "../images/navigation/committees_off.gif";
	img_one_def.src = "../images/navigation/about_us_off.gif";
	img_two_def.src = "../images/navigation/news_off.gif";
	img_three_def.src = "../images/navigation/membership_off.gif";
	img_four_def.src = "../images/navigation/committees_off.gif";
	img_one_chk.src = "../images/navigation/about_us_checked.gif";
	img_two_chk.src = "../images/navigation/news_checked.gif";
	img_three_chk.src = "../images/navigation/membership_checked.gif";
	img_four_chk.src = "../images/navigation/committees_checked.gif";

}

function mouseIn(thisImg){
	thisImg.src = eval(thisImg.name + "_on").src;
}

function mouseOut(thisImg){
	thisImg.src = eval(thisImg.name + "_def").src;
}

function loadMain(){
	top.frames['main_frame'].document.location.href = "../main/main.asp";
}