function getEventKeycode(e){ // thanks to w3c
	if(window.event) // IE
		return e.keyCode
	return e.which; // others
}

function getEventTarget(e){ // thanks to quirksmode.org
	if(!e) var e = window.event;
	if(e.target) targ = e.target;
	else if(e.srcElement) targ = e.srcElement;
	if(targ.nodeType == 3) // defeat Safari bug
		targ = targ.parentNode;
	return targ;
}

function appendOnChangeHandler(object, newhandler){ // thanks to Scott Geppert
	var oldhandler = object.onchange;
	object.onchange = function(){
		if(oldhandler)
			oldhandler();
		newhandler();
	}
}

////////////////////////////////////////////////////
// From PHPMyAdmin:
	/**
	 * enables highlight and marking of rows in data tables
	 *
	 */
	function PMA_markRowsInit(){
	    // for every table row ...
	    var rows = document.getElementsByTagName('tr');
	    for(var i = 0; i < rows.length; i++){
	        // ... with the class 'odd' or 'even' ...
	        if('odd' != rows[i].className.substr(0,3) && 'even' != rows[i].className.substr(0,4)){
	            continue;
	        }
	        // ... add event listeners ...
	        // ... to highlight the row on mouseover ...
	        if(navigator.appName == 'Microsoft Internet Explorer' ){
	            // but only for IE, other browsers are handled by :hover in css
	            rows[i].onmouseover = function(){
	                this.className += ' hover';
	            }
	            rows[i].onmouseout = function(){
	                this.className = this.className.replace( ' hover', '' );
	            }
	        }
	        // Do not set click events if not wanted
	        if(rows[i].className.search(/noclick/) != -1){
	            continue;
	        }
	        // ... and to mark the row on click ...
	        rows[i].onmousedown = function(){
	            var unique_id;
	            var checkbox;

	            checkbox = this.getElementsByTagName( 'input' )[0];
	            if(checkbox && checkbox.type == 'checkbox' ){
	                unique_id = checkbox.name + checkbox.value;
	            } else if(this.id.length > 0 ){
	                unique_id = this.id;
	            } else {
	                return;
	            }

	            if(typeof(marked_row[unique_id]) == 'undefined' || !marked_row[unique_id] ){
	                marked_row[unique_id] = true;
	            } else {
	                marked_row[unique_id] = false;
	            }

	            if(marked_row[unique_id] ){
	                this.className += ' marked';
	            } else {
	                this.className = this.className.replace(' marked', '');
	            }

	            if(checkbox && checkbox.disabled == false ){
	                checkbox.checked = marked_row[unique_id];
	            }
	        }

	        // ... and disable label ...
	        var labeltag = rows[i].getElementsByTagName('label')[0];
	        if(labeltag ){
	            labeltag.onclick = function(){
	                return false;
	            }
	        }
	        // .. and checkbox clicks
	        var checkbox = rows[i].getElementsByTagName('input')[0];
	        if(checkbox ){
	            checkbox.onclick = function(){
	                // opera does not recognize return false;
	                this.checked = ! this.checked;
	            }
	        }
	    }
	}
	window.onload=PMA_markRowsInit;

// thanks mattkruse.com (mattkruse.com/javascript/date)
	// ===================================================================
	// Author: Matt Kruse <matt@mattkruse.com>
	// WWW: http://www.mattkruse.com/
	//
	// NOTICE: You may use this code for any purpose, commercial or
	// private, without any further permission from the author. You may
	// remove this notice from your final code if you wish, however it is
	// appreciated by the author if at least my web site address is kept.
	//
	// You may *NOT* re-distribute this code in any way except through its
	// use. That means, you can include it in your product, or your web
	// site, or any other form where the code is actually being used. You
	// may not put the plain javascript up on your site for download or
	// include it in your javascript libraries for download.
	// If you wish to share this code with others, please just point them
	// to the URL instead.
	// Please DO NOT link directly to my .js files from your site. Copy
	// the files to your server and use them there. Thank you.
	// ===================================================================

	// HISTORY
	// ------------------------------------------------------------------
	// May 17, 2003: Fixed bug in parseDate() for dates <1970
	// March 11, 2003: Added parseDate() function
	// March 11, 2003: Added "NNN" formatting option. Doesn't match up
	//                 perfectly with SimpleDateFormat formats, but
	//                 backwards-compatability was required.

	// ------------------------------------------------------------------
	// These functions use the same 'format' strings as the
	// java.text.SimpleDateFormat class, with minor exceptions.
	// The format string consists of the following abbreviations:
	//
	// Field        | Full Form          | Short Form
	// -------------+--------------------+-----------------------
	// Year         | yyyy (4 digits)    | yy (2 digits), y (2 or 4 digits)
	// Month        | MMM (name or abbr.)| MM (2 digits), M (1 or 2 digits)
	//              | NNN (abbr.)        |
	// Day of Month | dd (2 digits)      | d (1 or 2 digits)
	// Day of Week  | EE (name)          | E (abbr)
	// Hour (1-12)  | hh (2 digits)      | h (1 or 2 digits)
	// Hour (0-23)  | HH (2 digits)      | H (1 or 2 digits)
	// Hour (0-11)  | KK (2 digits)      | K (1 or 2 digits)
	// Hour (1-24)  | kk (2 digits)      | k (1 or 2 digits)
	// Minute       | mm (2 digits)      | m (1 or 2 digits)
	// Second       | ss (2 digits)      | s (1 or 2 digits)
	// AM/PM        | a                  |
	//
	// NOTE THE DIFFERENCE BETWEEN MM and mm! Month=MM, not mm!
	// Examples:
	//  "MMM d, y" matches: January 01, 2000
	//                      Dec 1, 1900
	//                      Nov 20, 00
	//  "M/d/yy"   matches: 01/20/00
	//                      9/2/00
	//  "MMM dd, yyyy hh:mm:ssa" matches: "January 01, 2000 12:30:45AM"
	// ------------------------------------------------------------------

	var MONTH_NAMES=new Array('January','February','March','April','May','June','July','August','September','October','November','December','Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec');
	var DAY_NAMES=new Array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sun','Mon','Tue','Wed','Thu','Fri','Sat');
	function LZ(x){return(x<0||x>9?"":"0")+x}

	// ------------------------------------------------------------------
	// isDate(date_string, format_string )
	// Returns true if date string matches format of format string and
	// is a valid date. Else returns false.
	// It is recommended that you trim whitespace around the value before
	// passing it to this function, as whitespace is NOT ignored!
	// ------------------------------------------------------------------
	function isDate(val,format){
		var date=getDateFromFormat(val,format);
		if(date==0){ return false; }
		return true;
		}

	// -------------------------------------------------------------------
	// compareDates(date1,date1format,date2,date2format)
	//   Compare two date strings to see which is greater.
	//   Returns:
	//   1 if date1 is greater than date2
	//   0 if date2 is greater than date1 of if they are the same
	//  -1 if either of the dates is in an invalid format
	// -------------------------------------------------------------------
	function compareDates(date1,dateformat1,date2,dateformat2){
		var d1=getDateFromFormat(date1,dateformat1);
		var d2=getDateFromFormat(date2,dateformat2);
		if(d1==0 || d2==0){
			return -1;
			}
		else if(d1 > d2){
			return 1;
			}
		return 0;
		}

	// ------------------------------------------------------------------
	// formatDate(date_object, format)
	// Returns a date in the output format specified.
	// The format string uses the same abbreviations as in getDateFromFormat()
	// ------------------------------------------------------------------
	function formatDate(date, format){
		format=format+"";
		var result="";
		var i_format=0;
		var c="";
		var token="";
		var y=date.getYear()+"";
		var M=date.getMonth()+1;
		var d=date.getDate();
		var E=date.getDay();
		var H=date.getHours();
		var m=date.getMinutes();
		var s=date.getSeconds();
		var yyyy,yy,MMM,MM,dd,hh,h,mm,ss,ampm,HH,H,KK,K,kk,k;
		// Convert real date parts into formatted versions
		var value=new Object();
		if(y.length < 4){y=""+(y-0+1900);}
		value["y"]=""+y;
		value["yyyy"]=y;
		value["yy"]=y.substring(2,4);
		value["M"]=M;
		value["MM"]=LZ(M);
		value["MMM"]=MONTH_NAMES[M-1];
		value["NNN"]=MONTH_NAMES[M+11];
		value["d"]=d;
		value["dd"]=LZ(d);
		value["E"]=DAY_NAMES[E+7];
		value["EE"]=DAY_NAMES[E];
		value["H"]=H;
		value["HH"]=LZ(H);
		if(H==0){value["h"]=12;}
		else if(H>12){value["h"]=H-12;}
		else {value["h"]=H;}
		value["hh"]=LZ(value["h"]);
		if(H>11){value["K"]=H-12;} else {value["K"]=H;}
		value["k"]=H+1;
		value["KK"]=LZ(value["K"]);
		value["kk"]=LZ(value["k"]);
		if(H > 11){ value["a"]="PM"; }
		else { value["a"]="AM"; }
		value["m"]=m;
		value["mm"]=LZ(m);
		value["s"]=s;
		value["ss"]=LZ(s);
		while(i_format < format.length){
			c=format.charAt(i_format);
			token="";
			while((format.charAt(i_format)==c) && (i_format < format.length)){
				token += format.charAt(i_format++);
				}
			if(value[token] != null){ result=result + value[token]; }
			else { result=result + token; }
			}
		return result;
		}

	// ------------------------------------------------------------------
	// Utility functions for parsing in getDateFromFormat()
	// ------------------------------------------------------------------
	function _isInteger(val){
		var digits="1234567890";
		for(var i=0; i < val.length; i++){
			if(digits.indexOf(val.charAt(i))==-1){ return false; }
			}
		return true;
		}
	function _getInt(str,i,minlength,maxlength){
		for(var x=maxlength; x>=minlength; x--){
			var token=str.substring(i,i+x);
			if(token.length < minlength){ return null; }
			if(_isInteger(token)){ return token; }
			}
		return null;
		}

	// ------------------------------------------------------------------
	// getDateFromFormat( date_string , format_string )
	//
	// This function takes a date string and a format string. It matches
	// If the date string matches the format string, it returns the
	// getTime() of the date. If it does not match, it returns 0.
	// ------------------------------------------------------------------
	function getDateFromFormat(val, format){
		val=val+"";
		format=format+"";
		var i_val=0;
		var i_format=0;
		var c="";
		var token="";
		var token2="";
		var x,y;
		var now=new Date();
		var year=now.getYear();
		var month=now.getMonth()+1;
		var date=1;
		var hh=0;//now.getHours();
		var mm=0;//now.getMinutes();
		var ss=0;//now.getSeconds();
		var ampm="";
		var year_set = false;//hack

		while(i_format < format.length){
			// Get next token from format string
			c=format.charAt(i_format);
			token="";
			while((format.charAt(i_format)==c) && (i_format < format.length)){
				token += format.charAt(i_format++);
			}
			// Extract contents of value based on format token
			if(token=="yyyy" || token=="yy" || token=="y"){
				if(token=="yyyy"){ x=4;y=4; }
				if(token=="yy")   { x=2;y=2; }
				if(token=="y")    { x=2;y=4; }
				year=_getInt(val,i_val,x,y);
				if(year==null)
					return 0;
				i_val += year.length;
				if(year.length==2){
					if(year > 70)
						year=1900+(year-0);
					else
						year=2000+(year-0);
				}
				year_set = true; //hack
			} // end if year
			else if(token=="MMM"||token=="NNN"){
				month=0;
				for(var i=0; i<MONTH_NAMES.length; i++){
					var month_name=MONTH_NAMES[i];
					if(val.substring(i_val,i_val+month_name.length).toLowerCase()==month_name.toLowerCase()){
						if(token=="MMM"||(token=="NNN"&&i>11)){
							month=i+1;
							if(month>12){ month -= 12; }
							i_val += month_name.length;
							break;
						}
					}
				}
				if((month < 1)||(month>12)){return 0;}
				}
			else if(token=="EE"||token=="E"){
				for(var i=0; i<DAY_NAMES.length; i++){
					var day_name=DAY_NAMES[i];
					if(val.substring(i_val,i_val+day_name.length).toLowerCase()==day_name.toLowerCase()){
						i_val += day_name.length;
						break;
					}
				}
			}
			else if(token=="MM"||token=="M"){
				month=_getInt(val,i_val,token.length,2);
				if(month==null||(month<1)||(month>12)){return 0;}
				i_val+=month.length;}
			else if(token=="dd"||token=="d"){
				date=_getInt(val,i_val,token.length,2);
				if(date==null||(date<1)||(date>31)){return 0;}
				i_val+=date.length;}
			else if(token=="hh"||token=="h"){
				hh=_getInt(val,i_val,token.length,2);
				if(hh==null||(hh<1)||(hh>12)){return 0;}
				i_val+=hh.length;}
			else if(token=="HH"||token=="H"){
				hh=_getInt(val,i_val,token.length,2);
				if(hh==null||(hh<0)||(hh>23)){return 0;}
				i_val+=hh.length;}
			else if(token=="KK"||token=="K"){
				hh=_getInt(val,i_val,token.length,2);
				if(hh==null||(hh<0)||(hh>11)){return 0;}
				i_val+=hh.length;}
			else if(token=="kk"||token=="k"){
				hh=_getInt(val,i_val,token.length,2);
				if(hh==null||(hh<1)||(hh>24)){return 0;}
				i_val+=hh.length;hh--;}
			else if(token=="mm"||token=="m"){
				mm=_getInt(val,i_val,token.length,2);
				if(mm==null||(mm<0)||(mm>59)){return 0;}
				i_val+=mm.length;}
			else if(token=="ss"||token=="s"){
				ss=_getInt(val,i_val,token.length,2);
				if(ss==null||(ss<0)||(ss>59)){return 0;}
				i_val+=ss.length;}
			else if(token=="a"){
				if(val.substring(i_val,i_val+2).toLowerCase()=="am"){ampm="AM";}
				else if(val.substring(i_val,i_val+2).toLowerCase()=="pm"){ampm="PM";}
				else {return 0;}
				i_val+=2;}
			else {
				if(val.substring(i_val,i_val+token.length)!=token){return 0;}
				else {i_val+=token.length;}
			}
		}
		// If there are any trailing characters left in the value, it doesn't match
		if(i_val != val.length){ return 0; }
		// Is date valid for month?
		if(month==2){
			// Check for leap year
			if(((year%4==0)&&(year%100 != 0) ) || (year%400==0) ){ // leap year
				if(date > 29){ return 0; }
			}
			else{ if(date > 28){ return 0; } }
		}
		if((month==4)||(month==6)||(month==9)||(month==11)){
			if(date > 30){ return 0; }
		}
		// Correct hours value
		if(hh<12 && ampm=="PM"){
			hh = hh-0+12;
		}
		else if(hh>11 && ampm=="AM"){
			hh-=12;
		}
		if(!year_set)
			year += 1900;//hack
		var newdate=new Date(year,month-1,date,hh,mm,ss);
		return newdate.getTime();
	}

	// ------------------------------------------------------------------
	// parseDate( date_string [, prefer_euro_format] )
	//
	// This function takes a date string and tries to match it to a
	// number of possible date formats to get the value. It will try to
	// match against the following international formats, in this order:
	// y-M-d   MMM d, y   MMM d,y   y-MMM-d   d-MMM-y  MMM d
	// M/d/y   M-d-y      M.d.y     MMM-d     M/d      M-d
	// d/M/y   d-M-y      d.M.y     d-MMM     d/M      d-M
	// Added by Scott Geppert:
	// MMM d y
	// A second argument may be passed to instruct the method to search
	// for formats like d/M/y (european format) before M/d/y (American).
	// Returns a Date object or null if no patterns match.
	// ------------------------------------------------------------------
	function parseDate(val){
		var preferEuro=(arguments.length==2)?arguments[1]:false;
		generalFormats=new Array('y-M-d','MMM d, y','MMM d,y','y-MMM-d','d-MMM-y','MMM d');
		monthFirst=new Array('M/d/y','M-d-y','M.d.y','MMM-d','M/d','M-d','MMM d y');
		dateFirst =new Array('d/M/y','d-M-y','d.M.y','d-MMM','d/M','d-M');
		var checkList=new Array('generalFormats',preferEuro?'dateFirst':'monthFirst',preferEuro?'monthFirst':'dateFirst');

		// added by Scott Geppert - handle a few keywords
		if(val.length && (val.toLowerCase() == 'today' || val.toLowerCase() == 'now')){
			return new Date();
		}

		var d=null;
		for(var i=0; i<checkList.length; i++){
			var l=window[checkList[i]];
			for(var j=0; j<l.length; j++){
				d=getDateFromFormat(val,l[j]);
				if(d!=0){
					return new Date(d);
				}
			}
		}
		return null;
	}
// the above is courtesy of mattkruse.com (mattkruse.com/javascript/date)

//thanks Ian Mills
function isNumeric(s){
	return s.match(/^\d+\.?\d*$|^\d*\.?\d+$|^\d*$/);
}