function rollOver(imgName,imgURL){
document.images[imgName].src = imgURL;
}


function pageTopScroll() {
var scrj = 1;
var scdist = document.body.parentNode.scrollTop;
if(scrj<50 && scdist) {
scdist = (scdist>2) ? Math.ceil(scdist*.2) : 1;
scrj++;
scrollBy(0,-scdist);
setTimeout("pageTopScroll()",20);
} else {
scrollTo(0,0);
scrj = 1;
}
} 


function myChgPic1(myPicURL){
   document.images["myBigImage1"].src = myPicURL;
}
function myChgPic2(myPicURL){
   document.images["myBigImage2"].src = myPicURL;
}
function myChgPic3(myPicURL){
   document.images["myBigImage3"].src = myPicURL;
}
function myChgPic4(myPicURL){
   document.images["myBigImage4"].src = myPicURL;
}
function myChgPic5(myPicURL){
   document.images["myBigImage5"].src = myPicURL;
}
function myChgPic6(myPicURL){
   document.images["myBigImage6"].src = myPicURL;
}




//プルダウンメニュー

var openedMenu = null;
var submenuTimer;

//画像メニューにポインタがきた時
function menuOvr(id){

	// 開いているメニューと違うメニューであれば隠す。
	if (openedMenu && openedMenu != id){
		CloseMenu(id);
	}

	// サブウィンドウの表示
	OpenMenu(id);
}

//レイヤメニューの表示
function OpenMenu(id){ 

	if ( document.getElementById ){
		document.getElementById( id ).style.visibility = 'visible';
	}else if ( document.all ){
		document.all( id ).style.visibility = 'visible';
	}else if ( document.layers ){
		document.layers[ id ].visibility = 'show';
	}

	clearTimeout(submenuTimer);

	openedMenu = id;

}

//レイヤメニューの削除
function CloseMenu(){ 

	if ( document.getElementById ){
		document.getElementById( openedMenu ).style.visibility = 'hidden';
	}else if ( document.all ){
		document.all( openedMenu ).style.visibility = 'hidden';
	}else if ( document.layers ){
		document.layers[ openedMenu ].visibility = 'hide';
	}

	openedMenu = null;

}

//-->