var materials_OVER = new Image();
materials_OVER.src = '/images_tpl/buttons/materials_OVER.gif';

var materials_ORIGINAL = new Image();
materials_ORIGINAL.src = '/images_tpl/buttons/materials.gif';

var about_OVER = new Image();
about_OVER.src = '/images_tpl/buttons/about_OVER.gif';

var about_ORIGINAL = new Image();
about_ORIGINAL.src = '/images_tpl/buttons/about.gif';

var portfolio_OVER = new Image();
portfolio_OVER.src = '/images_tpl/buttons/portfolio_OVER.gif';

var portfolio_ORIGINAL = new Image();
portfolio_ORIGINAL.src = '/images_tpl/buttons/portfolio.gif';

var order_OVER = new Image();
order_OVER.src = '/images_tpl/buttons/order_OVER.gif';

var order_ORIGINAL = new Image();
order_ORIGINAL.src = '/images_tpl/buttons/order.gif';

var rating_OVER = new Image();
rating_OVER.src = '/images_tpl/buttons/rating_OVER.gif';

var rating_ORIGINAL = new Image();
rating_ORIGINAL.src = '/images_tpl/buttons/rating.gif';

function change_pic(name_pic,name_file)
{
	document.getElementById(name_pic).src=name_file.src;
}