function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}



function HideByClass()
{

    var x;                          
    var p = getElementsByClassName("poweredBySitefinityLogo");
    
    for (x in p)
    {
        p[x].innerHTML = '';
    } 
    
}

function PreloadImages()
{
    
    image1 = new Image();
	image1.src = "images/aboutus_on.gif";
	
	image2 = new Image();
	image2.src = "images/specialties_on.gif";
	
	image3 = new Image();
	image3.src = "images/patient_on.gif";
	
	image4 = new Image();
	image4.src = "images/resources_on.gif";
	
	image5 = new Image();
	image5.src = "images/contact_on.gif";
}

addLoadEvent(HideByClass);
addLoadEvent(PreloadImages);