if(document.images){
	header_logo_hm_off=new Image;header_logo_hm_off.src='/Images/header-logo-hm-off.gif';
	header_logo_hm_on=new Image;header_logo_hm_on.src='/Images/header-logo-hm-on.gif';
	header_logo_off=new Image;header_logo_off.src='/Images/header-logo-off.gif';
	header_logo_on=new Image;header_logo_on.src='/Images/header-logo-on.gif';
}
function imageSwap(location,imageName){
	if(document.images)document.images[location].src=eval(imageName+'.src');
}
function bgImageSwap(element,imageName){
	element.style.backgroundImage='url('+eval(imageName+'.src')+')';
}