/* preload */

function Preimg(){
var top_corporate=new Image();
var top_products=new Image();
var top_recruit=new Image();
var top_quality=new Image();
var top_eco=new Image();

top_corporate.src="/img/top/top_main_corporate_o.gif";
top_products.src="/img/top/top_main_products_o.gif";
top_recruit.src="/img/top/top_main_recruit_o.gif";
top_quality.src="/img/top/top_main_quality_o.gif";
top_eco.src="/img/top/top_main_eco_o.gif";
}