ob1ov=new Image(80,30);
	ob1ov.src="img/works_bt_cr.gif";
	ob1of=new Image(80,30);
	ob1of.src="img/works_bt_gy.gif";

	ob2ov=new Image(80,30);
	ob2ov.src="img/others_bt_cg.gif";
	ob2of=new Image(80,30);
	ob2of.src="img/others_bt_gy.gif";

	ob3ov=new Image(198,198);
	ob3ov.src="img/circle_oval_rmv.gif";
	ob3of=new Image(198,198);
	ob3of.src="img/circle_oval.gif";

	ob4ov=new Image(198,198);
	ob4ov.src="img/circle_oval_gmv.gif";
	ob4of=new Image(198,198);
	ob4of.src="img/circle_oval.gif";

	ob5ov=new Image(122,80);
	ob5ov.src="img/logomark.gif";
	ob5of=new Image(122,80);
	ob5of.src="img/logomark_g.gif";

function msOver(imgNum) {
		imgOn=eval(imgNum+"ov.src");
		document [imgNum].src=imgOn;
}

function msOut(imgNum) {
		imgOff=eval(imgNum+"of.src");
		document [imgNum].src=imgOff;
}