var loaded = false;



function rolleyecareImgs() {

  if (document.images) {

    newImage('examOn', '../images/ec_the_eye_exam_pic_o.gif');

    newImage('examOff', '../images/ec_the_eye_exam_pic.gif');

    newImage('childOn', '../images/ec_child_eye_care_pic_o.gif');

    newImage('childOff', '../images/ec_child_eye_care_pic.gif');

    newImage('contactafOn', '../images/ec_contact_lens_care_pic_o.gif');

    newImage('contactafOff', '../images/ec_contact_lens_care_pic.gif');

    newImage('vduOn', '../images/ec_vdu_user_pic_o.gif');

    newImage('vduOff', '../images/ec_vdu_user_pic.gif');

    newImage('eyehealthOn', '../images/ec_eye_health_pic_o.gif');

    newImage('eyehealthOff', '../images/ec_eye_health_pic.gif');

    newImage('examtxtOn', '../images/ec_the_eye_exam_txt_o.gif');

    newImage('examtxtOff', '../images/ec_the_eye_exam_txt.gif');

    newImage('childtxtOn', '../images/ec_child_eye_care_txt_o.gif');

    newImage('childtxtOff', '../images/ec_child_eye_care_txt.gif');

    newImage('contactaftxt1On', '../images/ec_contact_lens_care_txt1_o.gif');

    newImage('contactaftxt1Off', '../images/ec_contact_lens_care_txt1.gif');

    newImage('contactaftxt2On', '../images/ec_contact_lens_care_txt2_o.gif');

    newImage('contactaftxt2Off', '../images/ec_contact_lens_care_txt2.gif');

    newImage('vdutxtOn', '../images/ec_vdu_user_txt_o.gif');

    newImage('vdutxtOff', '../images/ec_vdu_user_txt.gif');

    newImage('eyehealthtxtOn', '../images/ec_eye_health_txt_o.gif');

    newImage('eyehealthtxtOff', '../images/ec_eye_health_txt.gif');

    loaded = true;

  }

}



function newImage(name, fileName){

	window[name] = new Image();

	window[name].src = fileName;

}



function chgImg(imgField,newImg) {

	if (document.images && loaded) {

		document[imgField].src= eval(newImg+'.src');

	}

}