/*
 * Clear Default Text: functions for clearing and replacing default text in
 * <input> elements.
 */
addEvent(window, 'load', init, false);

function init() {
    var formInputs = document.getElementsByTagName('input');
    for (var i = 0; i < formInputs.length; i++) {
        var theInput = formInputs[i];
        
        if (theInput.type == 'text') {  
            /* Add event handlers */
		if (theInput.id == 'lookup') {
	            addEvent(theInput, 'focus', clearDefaultText, false);
	            addEvent(theInput, 'blur', replaceDefaultText, false);
		}
        }
    }
}

function clearDefaultText(e) {
    var target = window.event ? window.event.srcElement : e ? e.target : null;
    if (!target) return;
    
    if (target.value == target.defaultValue) {
        target.value = '';
        target.style.color = '#444444';
    }
}

function replaceDefaultText(e) {
    var target = window.event ? window.event.srcElement : e ? e.target : null;
    if (!target) return;
    
    if (target.value == '' && target.defaultValue) {
        target.value = target.defaultValue;
        target.style.color = '#AAAAAA';
    }
}

/* 
 * Cross-browser event handling, by Scott Andrew
 */
function addEvent(element, eventType, lamdaFunction, useCapture) {
    if (element.addEventListener) {
        element.addEventListener(eventType, lamdaFunction, useCapture);
        return true;
    } else if (element.attachEvent) {
        var r = element.attachEvent('on' + eventType, lamdaFunction);
        return r;
    } else {
        return false;
    }
}