//// Copyright 2007, Google Inc.
////
//// Redistribution and use in source and binary forms, with or without 
//// modification, are permitted provided that the following conditions are met:
////
////  1. Redistributions of source code must retain the above copyright notice, 
////     this list of conditions and the following disclaimer.
////  2. Redistributions in binary form must reproduce the above copyright notice,
////     this list of conditions and the following disclaimer in the documentation
////     and/or other materials provided with the distribution.
////  3. Neither the name of Google Inc. nor the names of its contributors may be
////     used to endorse or promote products derived from this software without
////     specific prior written permission.
////
//// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
//// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
//// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
//// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
//// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
//// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
//// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
//// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
//// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
//// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Some WinCE devices use 'unknown' rather than 'undefined'. If an element has
// type 'unknown', we can not pass it to a function, so we must pass its type
// instead.
function isDefined(type) {
    return (type != 'undefined' && type != 'unknown');
}

function childNodes(element) {
    if (isDefined(typeof element.childNodes)) {
        return element.childNodes;
    } else if (isDefined(typeof element.children)) {
        return element.children;
    }
}

function getElementById(element_name) {
    if (isDefined(typeof document.getElementById)) {
        return document.getElementById(element_name);
    } else if (typeof isDefined(document.all)) {
        return document.all[element_name];
    }
}

function setTextContent(elem, content) {
    if (isDefined(typeof elem.innerText)) {
        elem.innerText = content;
    } else if (isDefined(typeof elem.textContent)) {
        elem.textContent = content;
    }
}

function addStatus(message, opt_class) {
    var elm = getElementById('status');
    var id = 'statusEntry' + (childNodes(elm).length + 1);
    if (!elm) return;
    if (opt_class) {
        elm.innerHTML += '<span id="' + id + '" class="' + opt_class + '"></span>';
    } else {
        elm.innerHTML += '<span id="' + id + '"></span>';
    }
    elm.innerHTML += '<br>';
    setTextContent(getElementById(id), message);
}

function HideElement(e) {
    var status = getElementById(e);
    status.innerHTML = '';
    status.style.display = 'none';
    status.style.height = '0px';
}

function getElementHeight(Elem) {
	if (ns4) {
		var elem = getObjNN4(document, Elem);
		return elem.clip.height;
	} else {
		if(document.getElementById) {
			var elem = document.getElementById(Elem);
		} else if (document.all){
			var elem = document.all[Elem];
		}
		if (op5) { 
			xPos = elem.style.pixelHeight;
		} else {
			xPos = elem.offsetHeight;
		}
		return xPos;
	} 
}

function getElementWidth(Elem) {
	if (ns4) {
		var elem = getObjNN4(document, Elem);
		return elem.clip.width;
	} else {
		if(document.getElementById) {
			var elem = document.getElementById(Elem);
		} else if (document.all){
			var elem = document.all[Elem];
		}
		if (op5) {
			xPos = elem.style.pixelWidth;
		} else {
			xPos = elem.offsetWidth;
		}
		return xPos;
	}
}