// show/hide element
function shoh (id)
{
	return $("#"+ id).toggle();
}

// show element
function show (id)
{
	$("#"+ id).show();
}

// hide element
function hide (id)
{
	$("#"+ id).hide();
}
// animated show/hide
function an_shoh(id)
{
	$("#"+ id).slideToggle("normal");
	return true;
}
function an_show(id)
{
	$("#"+ id).slideDown("normal");
	return true;
}
function an_hide(id)
{
	$("#"+ id).slideUp("normal");
	return true;
}

// cross-browser compatible getElementById
function elem_by_id (id)
{
	var elem = false;
	if (document.getElementById)
		elem = document.getElementById(id);
	else if (document.all)
		elem = document.all[id];
	else if (document.layers)
	{
		elem = document[id];
		elem.style = elem;
	}
	return elem;
}

// Developed by Robert Nyman, http://www.robertnyman.com
// Code/licensing: http://code.google.com/p/getelementsbyclassname/
var elems_by_class = function (className, tag, elm)
{
	if (document.getElementsByClassName) {
		elems_by_class = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		elems_by_class = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		elems_by_class = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return elems_by_class(className, tag, elm);
};

function get_event_target (e)
{
	if(e.srcElement)
		return e.srcElement;
	else if(e.target)
		return e.target;
	else
		return false;
}

function get_sizes (elem)
{
	var sizes = new Object;
	sizes.top = sizes.left = 0;

	// TODO: IE Compatibility
	var comp = document.defaultView.getComputedStyle(elem, "");
	sizes.width = parseInt(comp.getPropertyValue("width"));
	sizes.height = parseInt(comp.getPropertyValue("height"));

	if (elem.offsetParent)
		while (elem.offsetParent)
		{
			sizes.top += elem.offsetTop;
			sizes.left += elem.offsetLeft;
			elem = elem.offsetParent;
		}
	else if (elem.y)
	{
		sizes.top += elem.y;
		sizes.left += elem.x;
	}

	return sizes;
}

// open console
function key_press(e)
{
	if (e.keyCode == 59) {
		return shoh('debug_detail');
	}
	return true;
}
function delete_text(element, default_text)
{
	if(element.value == default_text)
	{
		element.value = '';
	}
}