function loadImage() { 
rollover=new Array();
  for (var i=0; i < 11 ; i++) {
     rollover[i] = new Image();
	}	

 	rollover[0].src = "common/img/bt_msg_on.gif";
	rollover[1].src = "common/img/bt_bg_on.gif";
	rollover[2].src = "common/img/bt_outline_on.gif";
	rollover[3].src = "common/img/bt_profile_on.gif";
	rollover[4].src = "common/img/bt_h_image_on.gif";
	rollover[5].src = "common/img/bt_h_concept_on.gif";
	rollover[6].src = "common/img/bt_h_category_on.gif";
	rollover[7].src = "common/img/bt_h_curriculum_on.gif";
	rollover[8].src = "common/img/bt_p_concept_on.gif";
	rollover[9].src = "common/img/bt_p_category_on.gif";
	rollover[10].src = "common/img/bt_p_support_on.gif";

}