preload_img=new Image();
    preload_img.src='navi_sty2.gif';
    preload_img2=new Image();
    preload_img2.src='navi_prc2.gif'
    preload_img3=new Image();
    preload_img3.src='navi_ord2.gif'
    preload_img4=new Image();
    preload_img4.src='navi_ivn2.gif'
    preload_img5=new Image();
    preload_img5.src='sub01_2.gif'
    preload_img6=new Image();
    preload_img6.src='sub02_2.gif'

function SImg(){
 
            if(document.getElementById){document.getElementById("STY1").style.visibility="visible"}
}

function HImg(){

            if(document.getElementById){document.getElementById("STY1").style.visibility="hidden"}
}