//general JS functions
function allow_numeric_only(e)
{
	if(e.keyCode) 
		key_code = e.keyCode;
	else 
		key_code = e.which;
	//check keycode for 0-9 on both sides of the keyboard, del, backspace etc
	if((key_code >= 48 && key_code <= 57) || (key_code >= 96 && key_code <= 105) || key_code== 8 || key_code== 46 || key_code== 190 || key_code== 110 || (key_code >= 35 && key_code <= 39))
	{ 
		return true;
	}
	else
		return false;
}

function check_date_validity(date) {
	var arr = date.split('-');
	var year = arr[0];
	var month = arr[1];
	var day = arr[2];
	
	var res = checkleapyear(year);
	//alert(res);
	if(res) {
		if(parseInt(day)>29 && parseInt(month)==02) {
			return false;
		}
		else {
			return true;
		}
	}
	else {
		if(parseInt(day)>28 && parseInt(month)==02) {
			//alert('hi');
			return false;
		}
		else {
			return true;
		}
	}
}

function checkleapyear(yr)
{
	yr = parseInt(yr);
	if(yr%4 == 0) {
		if(yr%100 != 0) {
			return true;
		}
		else {
			if(yr%400 == 0)
				return true;
			else
				return false;
		}
	}
	return false;
}

function get_date_diff(startDt,endDt)
{
	var arr = startDt.split('-');
	var start_year = arr[0];
	var start_month = arr[1];
	var start_day = arr[2];
	
	var startDate = new Date();
	startDate.setFullYear(start_year,(start_month-1),start_day);  // setFullYear month range is from 0-11
	
	var arr = endDt.split('-');
	var end_year = arr[0];
	var end_month = arr[1];
	var end_day = arr[2];
	
	var endDate = new Date();
	endDate.setFullYear(end_year,(end_month-1),end_day);  // setFullYear month range is from 0-11
	
   var date_diff = (endDate - startDate)/(1000*60*60*24);
   return date_diff;
}

function trim(stringToTrim) {
	return stringToTrim.replace(/^\s+|\s+$/g,"");
}

function str_replace(search, replace, subject, count) {
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Gabriel Paderni
    // +   improved by: Philip Peterson
    // +   improved by: Simon Willison (http://simonwillison.net)
    // +    revised by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
    // +   bugfixed by: Anton Ongson
    // +      input by: Onno Marsman
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +    tweaked by: Onno Marsman
    // +      input by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   input by: Oleg Eremeev
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Oleg Eremeev
    // %          note 1: The count parameter must be passed as a string in order
    // %          note 1:  to find a global variable in which the result will be given
    // *     example 1: str_replace(' ', '.', 'Kevin van Zonneveld');
    // *     returns 1: 'Kevin.van.Zonneveld'
    // *     example 2: str_replace(['{name}', 'l'], ['hello', 'm'], '{name}, lars');
    // *     returns 2: 'hemmo, mars'
 
    var i = 0, j = 0, temp = '', repl = '', sl = 0, fl = 0,
            f = [].concat(search),
            r = [].concat(replace),
            s = subject,
            ra = r instanceof Array, sa = s instanceof Array;
    s = [].concat(s);
    if (count) {
        this.window[count] = 0;
    }
 
    for (i=0, sl=s.length; i < sl; i++) {
        if (s[i] === '') {
            continue;
        }
        for (j=0, fl=f.length; j < fl; j++) {
            temp = s[i]+'';
            repl = ra ? (r[j] !== undefined ? r[j] : '') : r[0];
            s[i] = (temp).split(f[j]).join(repl);
            if (count && s[i] !== temp) {
                this.window[count] += (temp.length-s[i].length)/f[j].length;}
        }
    }
    return sa ? s : s[0];
}

function urlencode (str) {
    // URL-encodes string  
    // 
    // version: 911.718
    // discuss at: http://phpjs.org/functions/urlencode    // +   original by: Philip Peterson
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: AJ
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Brett Zamir (http://brett-zamir.me)    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: travc
    // +      input by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Lars Fischer    // +      input by: Ratheous
    // +      reimplemented by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Joris
    // +      reimplemented by: Brett Zamir (http://brett-zamir.me)
    // %          note 1: This reflects PHP 5.3/6.0+ behavior    // %        note 2: Please be aware that this function expects to encode into UTF-8 encoded strings, as found on
    // %        note 2: pages served as UTF-8
    // *     example 1: urlencode('Kevin van Zonneveld!');
    // *     returns 1: 'Kevin+van+Zonneveld%21'
    // *     example 2: urlencode('http://kevin.vanzonneveld.net/');    // *     returns 2: 'http%3A%2F%2Fkevin.vanzonneveld.net%2F'
    // *     example 3: urlencode('http://www.google.nl/search?q=php.js&ie=utf-8&oe=utf-8&aq=t&rls=com.ubuntu:en-US:unofficial&client=firefox-a');
    // *     returns 3: 'http%3A%2F%2Fwww.google.nl%2Fsearch%3Fq%3Dphp.js%26ie%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3Dcom.ubuntu%3Aen-US%3Aunofficial%26client%3Dfirefox-a'
    str = (str+'').toString();
        // Tilde should be allowed unescaped in future versions of PHP (as reflected below), but if you want to reflect current
    // PHP behavior, you would need to add ".replace(/~/g, '%7E');" to the following.
    return encodeURIComponent(str).replace(/!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').
                                                                    replace(/\)/g, '%29').replace(/\*/g, '%2A').replace(/%20/g, '+');
}

function urldecode (str) {
    // Decodes URL-encoded string  
    // 
    // version: 1001.2911
    // discuss at: http://phpjs.org/functions/urldecode    // +   original by: Philip Peterson
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: AJ
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Brett Zamir (http://brett-zamir.me)    // +      input by: travc
    // +      input by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Lars Fischer
    // +      input by: Ratheous    // +   improved by: Orlando
    // +      reimplemented by: Brett Zamir (http://brett-zamir.me)
    // +      bugfixed by: Rob
    // %        note 1: info on what encoding functions to use from: http://xkr.us/articles/javascript/encode-compare/
    // %        note 2: Please be aware that this function expects to decode from UTF-8 encoded strings, as found on    // %        note 2: pages served as UTF-8
    // *     example 1: urldecode('Kevin+van+Zonneveld%21');
    // *     returns 1: 'Kevin van Zonneveld!'
    // *     example 2: urldecode('http%3A%2F%2Fkevin.vanzonneveld.net%2F');
    // *     returns 2: 'http://kevin.vanzonneveld.net/'    // *     example 3: urldecode('http%3A%2F%2Fwww.google.nl%2Fsearch%3Fq%3Dphp.js%26ie%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3Dcom.ubuntu%3Aen-US%3Aunofficial%26client%3Dfirefox-a');
    // *     returns 3: 'http://www.google.nl/search?q=php.js&ie=utf-8&oe=utf-8&aq=t&rls=com.ubuntu:en-US:unofficial&client=firefox-a'
    
    return decodeURIComponent(str.replace(/\+/g, '%20'));
}