function preloadImage (page_name) {

	home_on = new Image;
	home_off = new Image;
	whoweare_on = new Image;
	whoweare_off = new Image;
	whatwedo_on = new Image;
	whatwedo_off = new Image;
	about_on = new Image;
	about_off = new Image;
	solutions_on = new Image;
	solutions_off = new Image;
	ourmarkets_on = new Image;
	ourmarkets_off = new Image;
	ourservice_on = new Image;
	ourservice_off = new Image;
	partners_on = new Image;
	partners_off = new Image;
	contact_on = new Image;
	contact_off = new Image;
 
 
	home_on.src = 'images/home_' + page_name + '_on.gif';
	home_off.src = 'images/home_' + page_name + '_off.gif';
	whoweare_on.src = 'images/whoweare_' + page_name + '_on.gif';
	whoweare_off.src = 'images/whoweare_' + page_name + '_off.gif';
	whatwedo_on.src = 'images/whatwedo_' + page_name + '_on.gif';
	whatwedo_off.src = 'images/whatwedo_' + page_name + '_off.gif';
	about_on.src = 'images/about_' + page_name + '_on.gif';
	about_off.src = 'images/about_' + page_name + '_off.gif';
	solutions_on.src = 'images/solutions_' + page_name + '_on.gif';
	solutions_off.src = 'images/solutions_' + page_name + '_off.gif';
	ourmarkets_on.src = 'images/ourmarkets_' + page_name + '_on.gif';
	ourmarkets_off.src = 'images/ourmarkets_' + page_name + '_off.gif';
	ourservice_on.src = 'images/ourservice_' + page_name + '_on.gif';
	ourservice_off.src = 'images/ourservice_' + page_name + '_off.gif';
	partners_on.src = 'images/partners_' + page_name + '_on.gif';
	partners_off.src = 'images/partners_' + page_name + '_off.gif';
	contact_on.src = 'images/contact_' + page_name + '_on.gif';
	contact_off.src = 'images/contact_' + page_name + '_off.gif';

	}

function onImage (img_name) {

	offAll ();
	var img_src = eval (img_name + '_on.src');
	if (document.images[img_name]){
	document.images[img_name].src = img_src;
	}
	return true;
	}
	
function offImage (img_name, page_name) {

	var img_src = eval (img_name + '_off.src');
	if (document.images[img_name]){
	document.images[img_name].src = img_src;
	}
	if (page_name != 'news') {
		document.images[page_name].src = eval (page_name + '_on.src');
		}

	return true;
	}
	
function offAll () {

	if (document.images['home']) { document.images['home'].src = home_off.src;}
	if (document.images['whoweare']) { document.images['whoweare'].src = whoweare_off.src;}
	if (document.images['whoweare']) { document.images['whoweare'].src = whoweare_off.src;}
	if (document.images['whatwedo']) { document.images['whatwedo'].src = whatwedo_off.src;}
	if (document.images['about']) { document.images['about'].src = about_off.src;}
	if (document.images['ourmarkets']) { document.images['ourmarkets'].src = ourmarkets_off.src;}
	if (document.images['ourservice']) { document.images['ourservice'].src = ourservice_off.src;}
	if (document.images['solutions']) { document.images['solutions'].src = solutions_off.src;}
	if (document.images['partners']) { document.images['partners'].src = partners_off.src;}
	if (document.images['contact']) { document.images['contact'].src = contact_off.src;}

	}