var loaded = false;



function rollproductsImgs() {

  if (document.images) {

    newImage('specsOn', '../images/prod_spec_frames_pic_o.gif');

    newImage('specsOff', '../images/prod_spec_frames_pic.gif');

    newImage('lensOn', '../images/prod_spec_lenses_pic_o.gif');

    newImage('lensOff', '../images/prod_spec_lenses_pic.gif');

    newImage('sportOn', '../images/prod_sport_n_sun_pic_o.gif');

    newImage('sportOff', '../images/prod_sport_n_sun_pic.gif');

    newImage('accessOn', '../images/prod_accessories_pic_o.gif');

    newImage('accessOff', '../images/prod_accessories_pic.gif');

    newImage('contactlensOn', '../images/prod_contact_lenses_pic_o.gif');

    newImage('contactlensOff', '../images/prod_contact_lenses_pic.gif');

    newImage('childsOn', '../images/prod_child_frames_pic_o.gif');

    newImage('childsOff', '../images/prod_child_frames_pic.gif');

    newImage('specstxtOn', '../images/prod_spec_frames_txt_o.gif');

    newImage('specstxtOff', '../images/prod_spec_frames_txt.gif');

    newImage('lenstxtOn', '../images/prod_spec_lenses_txt_o.gif');

    newImage('lenstxtOff', '../images/prod_spec_lenses_txt.gif');

    newImage('sporttxtOn', '../images/prod_sport_n_sun_txt_o.gif');

    newImage('sporttxtOff', '../images/prod_sport_n_sun_txt.gif');

    newImage('accesstxtOn', '../images/prod_accessories_txt_o.gif');

    newImage('accesstxtOff', '../images/prod_accessories_txt.gif');

    newImage('contactlenstxtOn', '../images/prod_contact_lenses_txt_o.gif');

    newImage('contactlenstxtOff', '../images/prod_contact_lenses_txt.gif');

    newImage('childstxtOn', '../images/prod_child_frames_txt_o.gif');

    newImage('childstxtOff', '../images/prod_child_frames_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');

	}

}