if(document.images){
	submit_button_off=new Image;submit_button_off.src='/Images/submit_off.gif';
	submit_button_on=new Image;submit_button_on.src='/Images/submit_on.gif';
	join_button_off=new Image;join_button_off.src='/Images/join_off.gif';
	join_button_on=new Image;join_button_on.src='/Images/join_on.gif';
}
function imageSwap(location,imageName){
	if(document.images)document.images[location].src=eval(imageName+'.src');
}