function getThis( objName ) {
	var obj = undefined;
	if ( document.getElementById ) {
		obj =  document.getElementById( objName );
	}else if ( document.all ) {
		obj = eval( "document.all." + objName );
	}else {
		alert ("Your browser is strange.\nI don't know how to get elements with it.");
	}
	return obj;
}

function getByTag( tag ) {
	var obj = undefined;
	if ( document.getElementsByTagName ) {
		obj = document.getElementsByTagName( tag );
	}else {
		alert( "document.getElementsByTagName doesn't work with your browswer" );
	}
}


var menuImages = new Array();
menuImages['home'] = new Image();
menuImages['home'].src = "images/home-link-over.png";
menuImages['archive'] = new Image();
menuImages['archive'].src = "images/archive-link-over.png";
menuImages['usage'] = new Image();
menuImages['usage'].src = "images/usage-link-over.png";

function menuOver( menuItem ) {
  if ( menuItem.className != "current-location" ) {
	var imgs = menuItem.getElementsByTagName("img");
	if ( imgs[0].alt == "HOME" ) {
	  imgs[0].src = menuImages['home'].src;
	}else if ( imgs[0].alt == "ARCHIVE" ) {
	  imgs[0].src = menuImages['archive'].src;
	}else if ( imgs[0].alt == "USAGE" ) {
	  imgs[0].src = menuImages['usage'].src;
	}
  }
}
function menuOut( menuItem ) {
  if ( menuItem.className != "current-location" ) {
	var imgs = menuItem.getElementsByTagName("img");
	if ( imgs[0].alt == "HOME" ) {
	  imgs[0].src = "images/home-link.png";
	}else if ( imgs[0].alt == "ARCHIVE" ) {
	  imgs[0].src = "images/archive-link.png";
	}else if ( imgs[0].alt == "USAGE" ) {
	  imgs[0].src = "images/usage-link.png";
	}
  }
}

function overLargeCalBox( calBox ) {
	calBox.parentNode.style.border="1px #999 solid";
	calBox.style.cursor="pointer";
}
function outLargeCalBox( calBox ) {
/*
	if ( calBox.parentNode && calBox.parentNode.className == "today" ) {
		return false;
	}else{
*/
		calBox.parentNode.style.border="1px solid black";
		calBox.style.cursor="default";
/*
	}
*/	
}
function clickLargeCalBox( calBox, url ) {
	window.location=url;
}

var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();

function f_clientWidth() {
	return f_filterResults (
		window.innerWidth ? window.innerWidth : 0,
		document.documentElement ? document.documentElement.clientWidth : 0,
		document.body ? document.body.clientWidth : 0
	);
}
function f_clientHeight() {
	return f_filterResults (
		window.innerHeight ? window.innerHeight : 0,
		document.documentElement ? document.documentElement.clientHeight : 0,
		document.body ? document.body.clientHeight : 0
	);
}
function f_scrollLeft() {
	return f_filterResults (
		window.pageXOffset ? window.pageXOffset : 0,
		document.documentElement ? document.documentElement.scrollLeft : 0,
		document.body ? document.body.scrollLeft : 0
	);
}
function f_scrollTop() {
	return f_filterResults (
		window.pageYOffset ? window.pageYOffset : 0,
		document.documentElement ? document.documentElement.scrollTop : 0,
		document.body ? document.body.scrollTop : 0
	);
}
function f_filterResults(n_win, n_docel, n_body) {
//alert( "filter:\ninner: " + n_win + "\ndocumentElement: " + n_docel + "\ndocument.body: " + n_body );
	var n_result = n_win ? n_win : 0;
	if (n_docel && (!n_result || (n_result > n_docel)))
		n_result = n_docel;
//	stinky hack to get Safari to behave
	if ( BrowserDetect.browser == "Safari" ) {
		return n_win - 10;
	}else{
		return n_body && (!n_result || (n_result < n_body)) ? n_body : n_result;
	}
}