function blankit() { alert(1); /* Dummy void function */ }

if (document.forms.length > 0) {
  for(var i=0; i<document.frm.length; i++) { 
    if (document.frm.elements[i].readOnly) {
    	document.frm.elements[i].tabIndex = -1;		// Skip tab
    	document.frm.elements[i].className = "readonly";	// Class change affects color
    	
    	//if (window.addEventListener) document.frm.elements[i].addEventListener("focus", blankit, false);
    	//else document.frm.elements[i].detachEvent("onfocus", blankit);
    }
  }
}