function myInputTextEvent( myElementId )
{
	var defaultClassName = 'defaultClassName';
	var focusClassName = 'focusClassName';

	var myElement = document.getElementById( myElementId );
	var defaultString = myElement.value;

	myElement.className = defaultClassName;
	
	
	myElement.onfocus = function()
	{
		myElement.className = focusClassName;
		
		if( myElement.value != defaultString ) return true; 
		
		myElement.value = '';
		
		return true;
	}
	
	myElement.onblur = function()
	{
		if( myElement.value != '' ) return true;
		
		myElement.className = defaultClassName;
		
		myElement.value = defaultString;
		
		return true;
	}
}