bu02_on = new Image();
bu02_on.src = "image/menu/bu02_on.gif";
bu02_off= new Image();
bu02_off.src= "image/menu/bu02_off.gif";

bu03_on = new Image();
bu03_on.src = "image/menu/bu03_on.gif";
bu03_off= new Image();
bu03_off.src= "image/menu/bu03_off.gif";

bu_blog_on = new Image();
bu_blog_on.src = "image/menu/bu_blog_on.gif";
bu_blog_off= new Image();
bu_blog_off.src= "image/menu/bu_blog_off.gif";


function imgRoll(imgDocID, mouseMov) {
	if ( mouseMov == "in" ) {
		document.images[imgDocID].src = eval(imgDocID + "_on.src");
	}
	if ( mouseMov == "out" ) {
		document.images[imgDocID].src = eval(imgDocID + "_off.src");
	}
}