if (document.images) {
var img1=new Image();img1.src="./images/btn01_h.gif";
var img2=new Image();img2.src="./images/btn02_h.gif";
var img3=new Image();img3.src="./images/bana_requestbtn_h.gif";
var img3=new Image();img3.src="./images/btn_actlink_h.gif";
}