try {
	var pageTracker = _gat._getTracker("UA-7847108-9"); pageTracker._trackPageview();
} catch(err) {
}

function MM_preloadImages() { //v3.0
	var d=document; 
	if(d.images) { 
		if(!d.MM_p) d.MM_p=new Array();
		var i,j=d.MM_p.length,a=MM_preloadImages.arguments; 
		for(i=0; i<a.length; i++)
			if (a[i].indexOf("#")!=0){ 
				d.MM_p[j]=new Image; 
				d.MM_p[j++].src=a[i];
			}
	}
}

function MM_findObj(n, d) { //v4.0
	var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
	if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
	if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_nbGroup(event, grpName) { //v3.0
	var i,img,nbArr,args=MM_nbGroup.arguments;
	if (event == "init" && args.length > 2) {
    	if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
			img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
			if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
			nbArr[nbArr.length] = img;
			for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
				if (!img.MM_up) img.MM_up = img.src;
				img.src = img.MM_dn = args[i+1];
        		nbArr[nbArr.length] = img;
    		} 
    	}
	} else if (event == "over") {
    	document.MM_nbOver = nbArr = new Array();
    	for (i=1; i < args.length-1; i+=3) 
        	if ((img = MM_findObj(args[i])) != null) {
      			if (!img.MM_up) img.MM_up = img.src;
      			img.src = (img.MM_dn && args[i+2]) ? args[i+2] : args[i+1];
      			nbArr[nbArr.length] = img;
    		}
  	} else if (event == "out" ) {
    	for (i=0; i < document.MM_nbOver.length; i++) {
      		img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; 
      	}
  	} else if (event == "down") {
    	if ((nbArr = document[grpName]) != null)
      	for (i=0; i < nbArr.length; i++) { 
          	img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; 
        }
    	document[grpName] = nbArr = new Array();
    	for (i=2; i < args.length-1; i+=2) 
        	if ((img = MM_findObj(args[i])) != null) {
        	if (!img.MM_up) img.MM_up = img.src;
        	img.src = img.MM_dn = args[i+1];
        	nbArr[nbArr.length] = img;
        }
    }
}

function openLink(s) {
	document.location = s.options[s.selectedIndex].value;
}

function onLoad() {
	MM_preloadImages(
		'/images/basicsearch-change.gif',
		'/images/advancedsearch-change.gif',
		'/images/browse-onchange.gif',
		'/images/help-onchange.gif');
}

window.onload = onLoad;

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

function addUnloadHandler(handler) {
	var oldonunload = window.onunload;
    if (typeof window.onunload != 'function') {
    	window.onunload = handler;
	} else {
		window.onunload = function() {
			if (oldonunload) { 
				oldonunload(); 
			}
			handler();
		};
	}
};




var HTML = {};
HTML.addChild = function(parent, element, nextSibling) {
	if (nextSibling) {
		element = parent.insertBefore(element, nextSibling);
	} else {
		parent.appendChild(element);
	}
	return element;
};
HTML.element = function(parent, nodeName, id, className, innerHTML, 
	nextSibling) 
{
	if (!parent) { throw new Error('Missing parent'); }
	if (!parent.appendChild) { 
		throw new Error('Not a valid parent node ' + parent); 
	}
	var element = document.createElement(nodeName);
	if (id) { element.id = id; }
	if (className) { element.className = className; }
	if (innerHTML) { element.innerHTML =  innerHTML; }
	return HTML.addChild(parent, element, nextSibling);
};
HTML.setAttribute = function(node, name, value) {
	// See http://www.quirksmode.org/dom/w3c_core.html#attributes
	var attribute = document.createAttribute(name);
	attribute.nodeValue = value;
	node.setAttributeNode(attribute);
	return attribute;
};
HTML.label = function(parent, text, id, className, forId) {
	var label = HTML.element(parent, 'label', id, className, text);
	if (forId) HTML.setAttribute(label, 'for', forId);
	return label;
};
HTML.a = function(parent, text, onclick, id, className) {
	var a = HTML.element(parent, 'a', id, className, text);
	a.href = '#';
	if (onclick) a.onclick = function() { onclick(); return false; };
	return a;
};
HTML.li = function (parent, id, className, nextSibling) {
	return HTML.element(parent, 'li', id, className, null, nextSibling);
};
HTML.div = function (parent, text, id, className) {
	return HTML.element(parent, 'div', id, className, text);
};
HTML.span = function (parent, text, id, className) {
	return HTML.element(parent, 'span', id, className, text);
};
HTML.img = function (parent, src, alt, id, className) {
	var img = HTML.element(parent, 'img', id, className);
	img.src = src;
	img.alt = alt;
	return img;
};
HTML.form = function (parent, id, className, onsubmit) {
	var form = HTML.element(parent, 'form', id, className);
	if (onsubmit) { 
		form.onsubmit = function() {return onsubmit();};
	}
	return form;
};
HTML.input = function(parent, type, id, className, tabIndex, value) {
	var input = HTML.element(parent, 'input', id, className);
	type = (type) ? type : 'text';
	try { 
		input.type = type; 
	} catch (e) {
		parent.removeChild(input);
		// IE does not allow property type to be set
		input = HTML.element(parent, '<input type="' + type + '">', id, 
			className);
	}
	if (id) { input.name = id; }
	if (value !== undefined) { input.value = value; }
	if (tabIndex !== undefined) { input.tabIndex = tabIndex; }
	return input;
};
HTML.submit = function(parent, id, className, tabIndex, value) {
	return HTML.input(parent, 'submit', id, className, tabIndex, value);
};
HTML.textArea = function (parent, id, className, tabIndex, rows) {
	var textArea = HTML.element(parent, 'textarea', id, className);
	if (id) { textArea.name = id; }
	if (tabIndex) { textArea.tabIndex = tabIndex; }
	textArea.rows = (rows && (rows > 0) ? rows : 1);
	return textArea;
};
HTML.$ = function(id, required) { 
	if (!id) {
		throw new Error('$: No value for \'id\' arguemnt');
	}
	var e = document.getElementById(id);
	if (required && !e) {
		throw new Error('Element \'' + id + '\' not found');
	}
	return e;
};
HTML.getFirstChildByTagName = function(element, tagName) {
	if (!element || !tagName) return null;
	var elements = element.getElementsByTagName(tagName);
	if (!elements) return null;
	if (elements.length === 0) return null;
	return elements[0];
};

HTML.bind = function(fn, obj, arg) {
	return function() {
		if(arg) { return fn.apply(obj,arg); } else { return fn.apply(obj); };
	};
};