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

function prepareInputsForHints() {
    var tags = ['input', 'select', 'textarea' ];
	 for(var t = 0; t < tags.length; t++) {
        var inputs = document.getElementsByTagName(tags[t]);
        for (var i=0; i<inputs.length; i++){
            connectInputHint(inputs[i]);
        }
    }
}

function connectInputHint(input) {
   var span = input.parentNode.getElementsByTagName("span")[0];
    if(span) {
        
        // Add arrow graphic
        var pointer = document.createElement('span');
      	pointer.className = 'hintPointer';
        pointer.innerHTML = '  ';
        span.appendChild(pointer);
 
        // Hook up events - onfocus/onblur, onmouseover/onmouseout
		if (span.className == "hintToggle") {
			input.onfocus = function () {
	            span.style.display = "inline";
			
	        }			
			input.onblur = function () {
	            span.style.display = "none";
	        }
		}		
    }
}

addLoadEvent(prepareInputsForHints);