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

function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\\\s)"+searchClass+"(\\\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}


function insertLogo(){
	
	if(!document.getElementsByTagName('h3')) return;
	var headers = document.getElementsByTagName('h3');
	
	for (var i=0; i < headers.length; i++) {
		
		//replace the word 'vetfone' with the image '<img src="img/branding/content-header.png" width="90" height="22" alt="Content Header" />'
		var header = headers[i].innerHTML;
		headers[i].innerHTML = header.replace("vetfone", '<img src="/img/branding/content-header.png" width="90" height="22" alt="vetfone" />');
	};
	
}

addLoadEvent(insertLogo);