var utils = {
	 /**
	 * finds a radio button set and detemines which one is currently
	 * checked
	 * 
	 * @param {} name of radioGroup
	 * @return {} value of checked radio button
	 */
	radioValue:function(radioGroup, getElement) {
		var bind = { 'element':false, 'value':false }		
		var radios = $$('input[name='+radioGroup+']').each(function(el) {
			if(el.checked) {
				this.element = el;
				this.value = Element.value;
				return;
			}
		},bind);
		return typeof getElement != "undefined" ? bind.element : bind.value;
	},
	
	isEmail:function (email) {
	  var usr    = "([a-zA-ZäöüÄÖÜ0-9][a-zA-ZäöüÄÖÜ0-9_.-]*|\"([^\\\\\x80-\xff\015\012\"]|\\\\[^\x80-\xff])+\")";
	  var domain = "([a-zA-ZäöüÄÖÜ0-9][a-zA-ZäöüÄÖÜ0-9._-]*\\.)*[a-zA-ZäöüÄÖÜ0-9.][a-zA-ZäöüÄÖÜ0-9._-]*\\.[a-zA-Z]{2,5}";
	  var regex  = "^" + usr + "\@" + domain + "$";
	  var rgx    = new RegExp(regex);
	  return rgx.exec(email) ? true : false;
	},

	toNumber:function(str) {
		return Number(str.toString().split(',').join('.'));
	},
	
	/**
	 * checks if the keyCode is either an integer or 8 or 9
	 * 
	 * @param {} keyCode
	 * @param {} key
	 * @return {}
	 */
	checkKey:function (keyCode, key){
		// allowed keys are backspace and tab
		if ('8,9,'.indexOf(keyCode+",") != -1) return { cancelKey: false }
	  	return { cancelKey: "0123456789".indexOf(key) == -1 };
	},

	
	/**
	 *  taken from Cyanide_7 
	 *  this function formats a number to a dollar currency string
	 *  
	 */
	formatCurrency:function(num) {
		 prefix = prefix || '';
		   num += '';
		   var splitStr = num.split('.');
		   var splitLeft = splitStr[0];
		   var splitRight = splitStr.length > 1 ? '.' + splitStr[1] : '';
		   var regx = /(\d+)(\d{3})/;
		   while (regx.test(splitLeft)) {
		      splitLeft = splitLeft.replace(regx, '$1' + ',' + '$2');
		   }
		   return splitLeft + splitRight;
	},
	
	/**
	 * Finds and returns the x,y scroll Postition of the window, crossbrowser compliant
	 * 
	 * @return {x,y} x and y postition in pixel
	 * @example:<code>var xpos = getScrollXY().x;<br>var scroll = getScrollXY(); alert(scroll.y); // alerts y scroll position in pixel </code>
	 */
	getScrollXY:function() {
	  var scrOfX = 0, scrOfY = 0;
	  if( typeof( window.pageYOffset ) == 'number' ) {
	    //Netscape compliant
	    scrOfY = window.pageYOffset;
	    scrOfX = window.pageXOffset;
	  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
	    //DOM compliant
	    scrOfY = document.body.scrollTop;
	    scrOfX = document.body.scrollLeft;
	  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
	    //IE6 standards compliant mode
	    scrOfY = document.documentElement.scrollTop;
	    scrOfX = document.documentElement.scrollLeft;
	  }
	  return {'x':scrOfX, 'y':scrOfY};
	},
	
	
	/**
	 * decodes a html entity string into its real text
	 * @param {} str
	 * @return {}
	 */
	html_entity_decode:function(str) {
	  var ta=document.createElement("textarea");
	  ta.innerHTML=str.replace(/</g,"&lt;").replace(/>/g,"&gt;");
	  return ta.value;
	},
	
	iecompattest:function () {
		return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
	},
	
	utf8_encode:function(rohtext) {
	     // dient der Normalisierung des Zeilenumbruchs
	     rohtext = rohtext.replace(/\r\n/g,"\n");
	     var utftext = "";
	     for(var n=0; n<rohtext.length; n++)
	         {
	         // ermitteln des Unicodes des  aktuellen Zeichens
	         var c=rohtext.charCodeAt(n);
	         // alle Zeichen von 0-127 => 1byte
	         if (c<128)
	             utftext += String.fromCharCode(c);
	         // alle Zeichen von 127 bis 2047 => 2byte
	         else if((c>127) && (c<2048)) {
	             utftext += String.fromCharCode((c>>6)|192);
	             utftext += String.fromCharCode((c&63)|128);}
	         // alle Zeichen von 2048 bis 66536 => 3byte
	         else {
	             utftext += String.fromCharCode((c>>12)|224);
	             utftext += String.fromCharCode(((c>>6)&63)|128);
	             utftext += String.fromCharCode((c&63)|128);}
	         }
	     return utftext;
	},
	
	
	utf8_decode:function (utftext) {
	     var plaintext = ""; var i=0; var c=c1=c2=0;
	     // while-Schleife, weil einige Zeichen uebersprungen werden
	     while(i<utftext.length)
	         {
	         c = utftext.charCodeAt(i);
	         if (c<128) {
	             plaintext += String.fromCharCode(c);
	             i++;}
	         else if((c>191) && (c<224)) {
	             c2 = utftext.charCodeAt(i+1);
	             plaintext += String.fromCharCode(((c&31)<<6) | (c2&63));
	             i+=2;}
	         else {
	             c2 = utftext.charCodeAt(i+1); c3 = utftext.charCodeAt(i+2);
	             plaintext += String.fromCharCode(((c&15)<<12) | ((c2&63)<<6) | (c3&63));
	             i+=3;}
	         }
	     return plaintext;
	 },
	 
	 
	
	/**
	 * Assign actions defined in Object myActions to specified Elements
	 * 
	 * Expecting an Object named "myActions" containing identifiers and actions to 
	 * apply to the identifier.
	 * 
	 * Define myActions like this:<br>
	 * <code>
	 * myActions = {<br>
	 *   '#bu_newproject': function (e) { <br>
	 *	 	e.onclick= function () { newProject(); }<br>
	 *	 },<br>
	 *   '.hover': function (e) { <br>
	 *	 	e.onmouseover= function () { e.addClass('hover'); }<br>
	 *	 }<br>
	 * </code>
	 */
	
	applyBehaviour:function (setrules) {
		rules = [];
		rules.push(setrules);
		rules.each(function(rule) {
			for (selector in rule){
				list = $$(selector).each(function(element) {
					rule[selector](element);
				})
			}
		});
	}
}

trace = function (str,asString) {
	if(typeof str == 'object' || !asString) {
		for (e in str) {
			//console.log(e + " " + str[e]);
		}
	} else { 
		//console.log(str); 
	}
}

/**
*  Javascript sprintf
*  http://www.webtoolkit.info/
*/
sprintfWrapper = {
    init : function () {

        if (typeof arguments == "undefined") { return null; }
        if (arguments.length < 1) { return null; }
        if (typeof arguments[0] != "string") { return null; }
        if (typeof RegExp == "undefined") { return null; }

        var string = arguments[0];
        var exp = new RegExp(/(%([%]|(\-)?(\+|\x20)?(0)?(\d+)?(\.(\d)?)?([bcdfosxX])))/g);
        var matches = [];
        var strings = [];
        var convCount = 0;
        var stringPosStart = 0;
        var stringPosEnd = 0;
        var matchPosEnd = 0;
        var newString = '';
        var match = null;
        var substitution = '';

        while ((match = exp.exec(string))) {
            if (match[9]) { convCount += 1; }

            stringPosStart = matchPosEnd;
            stringPosEnd = exp.lastIndex - match[0].length;
            strings[strings.length] = string.substring(stringPosStart, stringPosEnd);

            matchPosEnd = exp.lastIndex;
            matches[matches.length] = {
                match: match[0],
                left: match[3] ? true : false,
                sign: match[4] || '',
                pad: match[5] || ' ',
                min: match[6] || 0,
                precision: match[8],
                code: match[9] || '%',
                negative: parseInt(arguments[convCount],10) < 0 ? true : false,
                argument: String(arguments[convCount])
            };
        }
        strings[strings.length] = string.substring(matchPosEnd);

        if (matches.length === 0) { return string; }
        if ((arguments.length - 1) < convCount) { return null; }

        var code = null;
        	match = null;
        var i = null;

        for (i=0; i<matches.length; i++) {

            if (matches[i].code == '%') { substitution = '%'; }
            else if (matches[i].code == 'b') {
                matches[i].argument = String(Math.abs(parseInt(matches[i].argument,10)).toString(2));
                substitution = sprintfWrapper.convert(matches[i], true);
            }
            else if (matches[i].code == 'c') {
                matches[i].argument = String(String.fromCharCode(parseInt(Math.abs(parseInt(matches[i].argument,10)),10)));
                substitution = sprintfWrapper.convert(matches[i], true);
            }
            else if (matches[i].code == 'd') {
                matches[i].argument = String(Math.abs(parseInt(matches[i].argument,10)));
                substitution = sprintfWrapper.convert(matches[i]);
            }
            else if (matches[i].code == 'f') {
                matches[i].argument = String(Math.abs(parseFloat(matches[i].argument)).toFixed(matches[i].precision ? matches[i].precision : 6));
                substitution = sprintfWrapper.convert(matches[i]);
            }
            else if (matches[i].code == 'o') {
                matches[i].argument = String(Math.abs(parseInt(matches[i].argument,10)).toString(8));
                substitution = sprintfWrapper.convert(matches[i]);
            }
            else if (matches[i].code == 's') {
                matches[i].argument = matches[i].argument.substring(0, matches[i].precision ? matches[i].precision : matches[i].argument.length);
                substitution = sprintfWrapper.convert(matches[i], true);
            }
            else if (matches[i].code == 'x') {
                matches[i].argument = String(Math.abs(parseInt(matches[i].argument,10)).toString(16));
                substitution = sprintfWrapper.convert(matches[i]);
            }
            else if (matches[i].code == 'X') {
                matches[i].argument = String(Math.abs(parseInt(matches[i].argument,10)).toString(16));
                substitution = sprintfWrapper.convert(matches[i]).toUpperCase();
            }
            else {
                substitution = matches[i].match;
            }

            newString += strings[i];
            newString += substitution;

        }
        newString += strings[i];
        return newString;
    },
    convert : function(match, nosign){
        if (nosign) {
            match.sign = '';
        } else {
            match.sign = match.negative ? '-' : match.sign;
        }
        var l = match.min - match.argument.length + 1 - match.sign.length;
        var pad = new Array(l <= 0 ? 0 : l).join(match.pad);
        if (!match.left) {
            if (match.pad == "0" || nosign) {
                return match.sign + pad + match.argument;
            } else {
                return pad + match.sign + match.argument;
            }
        } else {
            if (match.pad == "0" || nosign) {
                return match.sign + match.argument + pad.replace(/0/g, ' ');
            } else {
                return match.sign + match.argument + pad;
            }
        }
    }
}
sprintf = sprintfWrapper.init;



/** php style file include for javascript files */
function include(script_filename) {
    var html_doc = document.getElementsByTagName('head').item(0);
    var js = document.createElement('script');
    js.setAttribute('language', 'javascript');
    js.setAttribute('type', 'text/javascript');
    js.setAttribute('src', script_filename);
    html_doc.appendChild(js);
    return false;
}

var included_files = new Array();

function include_once(script_filename) {
    if (!in_array(script_filename, included_files)) {
        included_files[included_files.length] = script_filename;
        include(script_filename);
    }
}


/** 
 * Searches for a Get parameter in the URL
 * 
 * @param {String} key
 * @param {String} url
 */
function $get(key, url){  
    if(arguments.length < 2) url =location.href;  
    if(arguments.length > 0 && key != ""){  
        if(key == "#"){  
            var regex = new RegExp("[#]([^$]*)");  
        } else if(key == "?"){  
            var regex = new RegExp("[?]([^#$]*)");  
        } else {  
            var regex = new RegExp("[?&]"+key+"=([^&#]*)");  
        }  
        var results = regex.exec(url);  
        return (results == null )? "" : results[1];  
    } else {  
        url = url.split("?");  
        var results = {};  
            if(url.length > 1){  
                url = url[1].split("#");  
                if(url.length > 1) results["hash"] = url[1];  
                url[0].split("&").each(function(item,index){  
                    item = item.split("=");  
                    results[item[0]] = item[1];  
                });  
            }  
        return results;  
    }  
}  


function htmlentities( string ){
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +    revised by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: nobbler
    // +    tweaked by: Jack
    // +   bugfixed by: Onno Marsman
    // %          note: table from http://www.the-art-of-web.com/html/character-codes/
    // *     example 1: htmlentities('Kevin & van Zonneveld');
    // *     returns 1: 'Kevin &amp; van Zonneveld'
 
    var histogram = {}, code = 0, tmp_arr = [], i = 0;
    var stringl = 0;
 
    histogram['34'] = 'quot';
    histogram['38'] = 'amp';
    histogram['60'] = 'lt';
    histogram['62'] = 'gt';
    histogram['160'] = 'nbsp';
    histogram['161'] = 'iexcl';
    histogram['162'] = 'cent';
    histogram['163'] = 'pound';
    histogram['164'] = 'curren';
    histogram['165'] = 'yen';
    histogram['166'] = 'brvbar';
    histogram['167'] = 'sect';
    histogram['168'] = 'uml';
    histogram['169'] = 'copy';
    histogram['170'] = 'ordf';
    histogram['171'] = 'laquo';
    histogram['172'] = 'not';
    histogram['173'] = 'shy';
    histogram['174'] = 'reg';
    histogram['175'] = 'macr';
    histogram['176'] = 'deg';
    histogram['177'] = 'plusmn';
    histogram['178'] = 'sup2';
    histogram['179'] = 'sup3';
    histogram['180'] = 'acute';
    histogram['181'] = 'micro';
    histogram['182'] = 'para';
    histogram['183'] = 'middot';
    histogram['184'] = 'cedil';
    histogram['185'] = 'sup1';
    histogram['186'] = 'ordm';
    histogram['187'] = 'raquo';
    histogram['188'] = 'frac14';
    histogram['189'] = 'frac12';
    histogram['190'] = 'frac34';
    histogram['191'] = 'iquest';
    histogram['192'] = 'Agrave';
    histogram['193'] = 'Aacute';
    histogram['194'] = 'Acirc';
    histogram['195'] = 'Atilde';
    histogram['196'] = 'Auml';
    histogram['197'] = 'Aring';
    histogram['198'] = 'AElig';
    histogram['199'] = 'Ccedil';
    histogram['200'] = 'Egrave';
    histogram['201'] = 'Eacute';
    histogram['202'] = 'Ecirc';
    histogram['203'] = 'Euml';
    histogram['204'] = 'Igrave';
    histogram['205'] = 'Iacute';
    histogram['206'] = 'Icirc';
    histogram['207'] = 'Iuml';
    histogram['208'] = 'ETH';
    histogram['209'] = 'Ntilde';
    histogram['210'] = 'Ograve';
    histogram['211'] = 'Oacute';
    histogram['212'] = 'Ocirc';
    histogram['213'] = 'Otilde';
    histogram['214'] = 'Ouml';
    histogram['215'] = 'times';
    histogram['216'] = 'Oslash';
    histogram['217'] = 'Ugrave';
    histogram['218'] = 'Uacute';
    histogram['219'] = 'Ucirc';
    histogram['220'] = 'Uuml';
    histogram['221'] = 'Yacute';
    histogram['222'] = 'THORN';
    histogram['223'] = 'szlig';
    histogram['224'] = 'agrave';
    histogram['225'] = 'aacute';
    histogram['226'] = 'acirc';
    histogram['227'] = 'atilde';
    histogram['228'] = 'auml';
    histogram['229'] = 'aring';
    histogram['230'] = 'aelig';
    histogram['231'] = 'ccedil';
    histogram['232'] = 'egrave';
    histogram['233'] = 'eacute';
    histogram['234'] = 'ecirc';
    histogram['235'] = 'euml';
    histogram['236'] = 'igrave';
    histogram['237'] = 'iacute';
    histogram['238'] = 'icirc';
    histogram['239'] = 'iuml';
    histogram['240'] = 'eth';
    histogram['241'] = 'ntilde';
    histogram['242'] = 'ograve';
    histogram['243'] = 'oacute';
    histogram['244'] = 'ocirc';
    histogram['245'] = 'otilde';
    histogram['246'] = 'ouml';
    histogram['247'] = 'divide';
    histogram['248'] = 'oslash';
    histogram['249'] = 'ugrave';
    histogram['250'] = 'uacute';
    histogram['251'] = 'ucirc';
    histogram['252'] = 'uuml';
    histogram['253'] = 'yacute';
    histogram['254'] = 'thorn';
    histogram['255'] = 'yuml';
 
    string += '';
    stringl = string.length
    for (i = 0; i < stringl; ++i) {
        code = string.charCodeAt(i);
        if (code in histogram) {
            tmp_arr[i] = '&'+histogram[code]+';';
        } else {
            tmp_arr[i] = string.charAt(i);
        }
    }
 
    return tmp_arr.join('');
}


// some useful prototypes
//Element.prototype.hide=function(styles) { this.style.display='none'; if(typeof styles != 'undefined') this.setStyles(styles); return this; }
//Element.prototype.show=function(styles) { this.style.display='block'; if(typeof styles != 'undefined') this.setStyles(styles);  return this; }
Element.prototype.toggle=function() { this.style.display == 'block' || this.style.display == '' ? 'none' : 'block'; return this; }
String.prototype.in_object=function(obj) { for(e in obj) { if (e == this) { return true;} return false }}
//String.prototype.send=function(callback){var eq=new Request({method:'get',url:connector,onComplete:callback}).send(this);}