button_preload1 = new Image();
button_preload1.src = "../images/button-about_hbk-highlight.gif";
button_preload2 = new Image();
button_preload2.src = "../images/button-approach-highlight.gif";
button_preload3 = new Image();
button_preload3.src = "../images/button-careers-highlight.gif";
button_preload4 = new Image();
button_preload4.src = "../images/button-contact_us-1-highlight.gif";
button_preload5 = new Image();
button_preload5.src = "../images/button-contact_us-2-highlight.gif";
button_preload6 = new Image();
button_preload6.src = "../images/button-contact_us-3-highlight.gif";
button_preload7 = new Image();
button_preload7.src = "../images/button-contact_us-4-highlight.gif";
button_preload8 = new Image();
button_preload8.src = "../images/button-contact_us-5-highlight.gif";
button_preload9 = new Image();
button_preload9.src = "../images/button-contact_us-6-highlight.gif";
button_preload10 = new Image();
button_preload10.src = "../images/button-contact_us-7-highlight.gif";
button_preload11 = new Image();
button_preload11.src = "../images/button-contact_us-8-highlight.gif";
button_preload12 = new Image();
button_preload12.src = "../images/button-contact_us-9-highlight.gif";
button_preload13 = new Image();
button_preload13.src = "../images/button-contact_us-10-highlight.gif";
button_preload14 = new Image();
button_preload14.src = "../images/button-recent projects-highlight.gif";
button_preload15 = new Image();
button_preload15.src = "../images/button-safety-highlight.gif";
button_preload16 = new Image();
button_preload16.src = "../images/button-services-highlight.gif";
button_preload17 = new Image();
button_preload17.src = "../images/button-side-about_hbk-highlight.gif";
button_preload18 = new Image();
button_preload18.src = "../images/button-side-approach-highlight.gif";
button_preload19 = new Image();
button_preload19.src = "../images/button-side-careers-highlight.gif";
button_preload20 = new Image();
button_preload20.src = "../images/button-side-contact_us-highlight.gif";
button_preload21 = new Image();
button_preload21.src = "../images/button-side-recent projects-highlight.gif";
button_preload22 = new Image();
button_preload22.src = "../images/button-side-safety-highlight.gif";
button_preload23 = new Image();
button_preload23.src = "../images/button-side-services-highlight.gif";
button_preload24 = new Image();
button_preload24.src = "../images/button-side-home.gif";
button_preload25 = new Image();
button_preload25.src = "../images/button-side-home-highlight.gif";

function initImage(ImageFade){
     imageId = ImageFade;
     image = document.getElementById(imageId);
     setOpacity(image, 0);
     image.style.visibility = "visible";
     fadeIn(imageId,0);
}

function setOpacity(obj, opacity){
     opacity = (opacity == 100)?99.999:opacity;
     obj.style.filter = "alpha(opacity:"+opacity+")";
     obj.style.KHTMLOpacity = opacity/100;
     obj.style.MozOpacity = opacity/100;
     obj.style.opacity = opacity/100;
}

function fadeIn(objId,opacity){
     if (document.getElementById){
          obj = document.getElementById(objId);
          if (opacity <= 100){
               setOpacity(obj, opacity);
               opacity += 10;
               window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 100);
          }
     }
}

function BeginFade(){
     setTimeout("initImage('image_leadership')", 3000);
     setTimeout("initImage('image_safety')", 4000);
     setTimeout("initImage('image_recent_projects')", 5000);
}

function Image_Switch(Image_Name, File_Name){
     document.images[Image_Name].src = "../images/" + File_Name;
}