/* REG EXP FORM VALIDATION */

	function isEmpty( s ) {
		var re = new RegExp("[^\\s]|[ ]")
		return !re.test( s )
	}

	function isAlphaNumeric( s ){
		var re = new RegExp("[^a-zA-Z0-9_-]|\\s")
		return !re.test( s )
	}

	function hasUppercase( s ){
		var re = new RegExp("[A-ZÆØÅ]")
		return re.test( s )
	}

	function hasSpaceAtStart( s ){
		var re = new RegExp("^\\s")
		return re.test( s )
	}

	function hasSpaceAtEnd( s ){
		var re = new RegExp("\\s$")
		return re.test( s )
	}

	function isNumeric( s ){
		var regExp = new RegExp("[^0-9]")
		return !regExp.test( s )
	}

	function isTelephoneNumber( s ) {
		var re = new RegExp("^\\s*\\d{8}\\s*$")
		return re.test( s )
	}

	function isZip( s ) {
		var re = new RegExp("^\\s*\\d{4}\\s*$")
		return re.test( s )
	}

	function isNumber( s, numberOfDigits ) {
		var re = new RegExp("^\\s*\\d{"+numberOfDigits+"}\\s*$")
		return re.test( s )
	}

	function isEmail( s ) {
		var reg1 = /(@.*@)|(\.\.)|(,)|(@\.)|(\.@)|(^\.)|( )|([æøåÆØÅüöäÜÖÄ])/;	// definitions for nonvalid email
		var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2}|com|net|org|gov|mil|int|biz|pro|info|arpa|aero|coop|name|museum)(\]?)$/; 	// definitions for valid email
		if (!reg1.test( s ) && reg2.test( s ) ) { 	// Check for valid / nonvalid
			return true
		} else {
			return false
		}
	}

	function isEmailHrefSubject( s ) {
		var re = new RegExp("[^\]a-zæøåA-ZÆÅØ0-9\\s\_\+\-\.\,\:\;\?\!\*\#\(\)\|\{\}\/\[]")
		return !re.test( s )
	}

	function isEmailHrefBody( s ){
		var re = new RegExp("[^\]a-zæøåA-ZÆÅØ0-9\\s\_\+\-\.\,\:\;\?\!\*\#\(\)\|\{\}\/\[]")
		return !re.test( s )
	}

	function isNodeNameValid( s ){
		//whitespace at the beginning or in the end ?
		var reg1 = new RegExp("^\\s|\\s$")
		//Containing illegal characters ?
		var reg2 = new RegExp("[\'\"]")
		if( !reg1.test( s ) && !reg2.test( s ) ) return true
		return false
	}

	function isDogtagValid(arrDogtags, s){
		for (var i = 0; i < arrDogtags.length; i++) {
			if( arrDogtags[i] == s ) return false
		}
		return true
	}

	function isHTMLtitle( s ) {
		var re = new RegExp("[^\]a-zæøåA-ZÆÅØ0-9 \_\+\-\.\,\:\;\=\?\!\*\#\(\)\|\{\}\/\[]")
		return !re.test( s )
	}

	function isURL( s ){
		//Doesn´t compute url´s by IP yet eg. myURL = "https://123.123.123.123/" check emailvalidation for further improvement
		var reValid 	= new RegExp("^http(s?):\/\/[A-Za-z0-9][A-Za-z0-9\-\.]+[A-Za-z0-9]\.[A-Za-z]{2,}[\43-\176]*$") //Valid
		var reInvalid	= new RegExp("[\\s\'\"\´]")
		if( reValid.test( s ) && !reInvalid.test( s ) ) return true
		return false
	}

	function isUrlImage( sUrl ){
		var bIsImage = false
		var sExt = sUrl.substring( sUrl.lastIndexOf('.') + 1 )
		sExt = sExt.toLowerCase()
		var aImageExtensions = new Array("jpg", "jpeg", "png", "bmp", "gif")
		for( var item in aImageExtensions ){
			if( aImageExtensions[item] == sExt ) bIsImage = true
		}
		return bIsImage
	}

	function checkFileExtension( sFile, sExtension ){
		var sFileExt = sFile.substring( sFile.lastIndexOf('.') + 1 )
		sFileExt = sFileExt.toLowerCase()
		sExtension = sExtension.toLowerCase()
		return sFileExt == sExtension ? true : false
	}

	/**
	 * Check if a given string input is a valid date ( dd-mm-yyyy )
	 *
	 */

	 function isDate( sDate ){
		var sRegEx = /^(\d{2})-(\d{2})-(\d{4})$/
		var aDate = sDate.match(sRegEx); // is the format ok?
		if ( aDate == null ) return false
		var iYear	= aDate[3]
		var iMonth  = aDate[2]
		var iDay	= aDate[1]
		if ( !isDateTime(iYear, iMonth, iDay, 0, 0, 0) ) return false
		return true
	}

	/**
	 * Check if a given string input is a valid time ( HH:ii:ss )
	 */
	 function isTime( sTime ){
		var sRegEx = /^(\d{2}):(\d{2}):(\d{2})$/
		var aTime = sTime.match(sRegEx); // is the format ok?
		if ( aTime == null ) return false
		var iHours		= aTime[1]
		var iMinutes	= aTime[2]
		var iSeconds	= aTime[3]
		if ( iHours > 23 || iHours < 0 || iMinutes < 0 || iMinutes > 59 || iSeconds < 0 || iSeconds > 59 ) return false
		return true
	}

	/*
	 * Check if valid date and time
	 */
	function isDateTime (iYear, iMonth, iDay, iHours, iMinutes, iSeconds) {
		// month argument must be in the range 1 - 12
		iMonth = iMonth - 1; // javascript month range : 0- 11
		var tempDate = new Date(iYear, iMonth, iDay, iHours, iMinutes, iSeconds);
		if ( iYear 		== tempDate.getFullYear() &&
			 iMonth 	== tempDate.getMonth() &&
			 iDay 		== tempDate.getDate() &&
			 iHours 	== tempDate.getHours() &&
			 iMinutes 	== tempDate.getMinutes() &&
			 iSeconds 	== tempDate.getSeconds() ){
			return true
		} else {
			return false
		}
	}