$(function() {

	if (!('placeholder' in document.createElement('input'))){
		var elms = $('input').get();
		for(var i=0;i<elms.length;i++){
			var placeholder = elms[i].getAttribute ? elms[i].getAttribute('placeholder') : null;
			if (placeholder !== null){
				elms[i].placeholder = placeholder;
				if (!elms[i].value) elms[i].value = elms[i].placeholder;
				elms[i].onfocus = function(){if (this.value == this.placeholder){
					this.value='';
				}}
				elms[i].onblur = function(){if (this.value == ''){
					this.value=this.placeholder;
				}}
			}
		}
	}
	
	if (!('placeholder' in document.createElement('textarea'))){
		var elms = $('textarea').get();
		for(var i=0;i<elms.length;i++){
			var placeholder = elms[i].getAttribute ? elms[i].getAttribute('placeholder') : null;
			if (placeholder !== null){
				elms[i].placeholder = placeholder;
				if (!elms[i].innerHTML) elms[i].innerHTML = elms[i].placeholder;
				elms[i].onfocus = function(){if (this.innerHTML == this.placeholder){
					this.innerHTML='';
				}}
				elms[i].onblur = function(){if (this.innerHTML == ''){
					this.innerHTML=this.placeholder;
				}}
			}
		}
	}

});

function selectProductQty(o){
	var kurs = document.getElementById('kurs').value;
	var id = o.name.substr(4);
	var qty = o.value;	
	var price = document.getElementById('price_'+id).value;		
	
	document.getElementById('totalp_'+id).innerHTML = IsNumeric(qty) ? showPrice(price*qty, '.') + ' грн.': '0';
	//document.getElementById('totals_'+id).innerHTML = IsNumeric(qty) ? '$ ' + showPrice(price*qty*kurs, ',') : '0';
	
	var elems = document.getElementById('productTables').getElementsByTagName('input');
	var total = 0; var k = 0;
	for(var i=0,len=elems.length;i<len;i++){
		if(elems[i].id.substr(0,6)=='price_'){
			k = elems[i].id.substr(6);
			kprice = elems[i].value;
			kqty = document.getElementById('num_'+k).value;
			total += kprice*kqty;
		}
	}
	document.getElementById('totalp').innerHTML = showPrice(total, '.') + ' грн.';
	//document.getElementById('totals').innerHTML = '$ ' + showPrice(total*kurs, ',');
}

function showPrice(price, delim){
	var calculated = price;			
	var decimal_places = round(calculated) == round(calculated, 2) ? 0 : 2;
	calculated = round(calculated, 2);
	//alert(price + ' = ' + IsNumeric(price));
	var result = number_format(calculated, decimal_places, delim, '');	
	return result;
}

function IsNumeric(sText){
	if (sText > 9999) return false;
	sText = sText+'';
	var ValidChars = "0123456789";
	var IsNumber=true;
	var Char;
	//alert(sText + ' = ' + sText.length);
	for (i=0;i<sText.length && IsNumber == true; i++){ 		
		Char = sText.charAt(i); 		
		if (ValidChars.indexOf(Char) == -1) IsNumber = false;
	}
	return IsNumber;
}
   
function number_format(number, decimals, dec_point, thousands_sep) {
    var n = !isFinite(+number) ? 0 : +number,
        prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),
        sep = (typeof thousands_sep === 'undefined') ? ',' : thousands_sep,
        dec = (typeof dec_point === 'undefined') ? '.' : dec_point,
        s = '',
        toFixedFix = function (n, prec) {
            var k = Math.pow(10, prec);
            return '' + Math.round(n * k) / k;
        };
    // Fix for IE parseFloat(0.55).toFixed(0) = 0;
    s = (prec ? toFixedFix(n, prec) : '' + Math.round(n)).split('.');
    if (s[0].length > 3) {
        s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);
    }
    if ((s[1] || '').length < prec) {
        s[1] = s[1] || '';
        s[1] += new Array(prec - s[1].length + 1).join('0');
    }
    return s.join(dec);
}


function round (val, precision, mode) {
    var retVal=0,v='',integer='',decimal='',decp=0,negative=false;
    var _round_half_oe = function (dtR,dtLa,even){
        if (even === true) {
            if (dtLa == 50) {
                if ((dtR % 2) === 1) {
                    if (dtLa >= 5) {
                        dtR+=1;
                    } else {
                        dtR-=1;
                    }
                }
            }else if (dtLa >= 5) {
                dtR+=1;
            }
        }else{
            if (dtLa == 5) {
                if ((dtR % 2) === 0) {
                    if (dtLa >= 5) {
                        dtR+=1;
                    }else{
                        dtR-=1;
                    }
                }
            }else if (dtLa >= 5) {
                dtR+=1;
            }
        }

        return dtR;
    };
    var _round_half_ud = function (dtR,dtLa,up) {
        if (up === true) {
            if (dtLa>=5) {
                dtR+=1;
            }
        }else{
            if (dtLa>5) {
                dtR+=1;
            }
        }
        return dtR;
    };
    var _round_half = function (val,decplaces,mode){
        var v = val.toString(),vlen=0,vlenDif=0;
        var decp = v.indexOf('.');

        var digitToRound = 0,digitToLookAt = 0;
        var integer='',decimal='';
        var round = null,bool=false;
        switch (mode) {
            case 'up':
                bool = true;
                // Fall-through
            case 'down':
                round = _round_half_ud;
                break;
            case 'even':
                bool = true;
            case 'odd':
                round = _round_half_oe;
                break;
        }
        if (decplaces < 0){ //Int round
            vlen=v.length;

            decplaces = vlen + decplaces;
            digitToLookAt = Number(v.charAt(decplaces));
            digitToRound  = Number(v.charAt(decplaces-1));
            digitToRound  = round(digitToRound,digitToLookAt,bool);
            v = v.slice(0,decplaces-1);
            vlenDif = vlen-v.length-1;

            if (digitToRound == 10){
                v = String(Number(v)+1)+"0";
            }else{
                v+=digitToRound;
            }

            v = Number(v)*(Math.pow(10,vlenDif));
        }else if (decplaces > 0){
            integer=v.slice(0,decp);
            decimal=v.slice(decp+1);
            digitToLookAt = Number(decimal.charAt(decplaces));

            digitToRound  = Number(decimal.charAt(decplaces-1));
            digitToRound  = round(digitToRound,digitToLookAt,bool);
            decimal=decimal.slice(0,decplaces-1);
            if (digitToRound==10){
                v=Number(integer+'.'+decimal)+(1*(Math.pow(10,(0-decimal.length))));
            }else{
                v=Number(integer+'.'+decimal+digitToRound);
            }
        }else{
            integer=v.slice(0,decp);
            decimal=v.slice(decp+1);
            digitToLookAt = Number(decimal.charAt(decplaces));

            digitToRound  = Number(integer.charAt(integer.length-1));
            digitToRound  = round(digitToRound,digitToLookAt,bool);
            decimal='0';
            integer = integer.slice(0,integer.length-1);
            if (digitToRound==10){
                v=Number(integer)+1;
            }else{
                v=Number(integer+digitToRound);
            }
        }
        return v;
    };


    //precision optional - defaults 0
    if (typeof precision == 'undefined') {
        precision = 0;
    }
    //mode optional - defaults round half up
    if (typeof mode == 'undefined') {
        mode = 'PHP_ROUND_HALF_UP';
    }

    if (val < 0){ //Remember if val is negative
        negative = true;
    }else{
        negative = false;
    }

    v = Math.abs(val).toString(); //Take a string representation of val
    decp = v.indexOf('.');        //And locate the decimal point
    if ((decp == -1) && (precision >=0)){
   /* If there is no deciaml point and the precision is greater than 0
         * there is no need to round, return val
         */
        return val;
    }else{
        if (decp == -1){
            //There are no decimals so intger=V and decimal=0
            integer = v;
            decimal = '0';
        }else{
            //Otherwise we have to split the decimals from the integer
            integer = v.slice(0,decp);
            if (precision >= 0){
                //If the precision is greater than 0 then split the decimals from the integer
                //We truncate the decimals to a number of places equal to the precision requested+1
                decimal = v.substr(decp+1,precision+1);
            }else{
                //If the precision is less than 0 ignore the decimals - set to 0
                decimal = '0';
            }
        }
        if ((precision > 0) && (precision >= decimal.length)){
            /*If the precision requested is more decimal places than already exist
            * there is no need to round - return val
            */
            return val;
        }else if ((precision < 0) && (Math.abs(precision) >= integer.length)){
           /*If the precison is less than 0, and is greater than than the
             *number of digits in integer, return 0 - mimics PHP
             */
            return 0;
        }
        val = Number(integer+'.'+decimal); // After sanitizing recreate val
    }

    //Call approriate function based on passed mode, fall through for integer constants
    switch (mode){
        case 0:
        case 'PHP_ROUND_HALF_UP':
            retVal = _round_half(val,precision,'up');
            break;
        case 1:
        case 'PHP_ROUND_HALF_DOWN':
            retVal = _round_half(val, precision,'down');
            break;
        case 2:
        case 'PHP_ROUND_HALF_EVEN':
            retVal = _round_half(val,precision,'even');
            break;
        case 3:
        case 'PHP_ROUND_HALF_ODD':
            retVal = _round_half(val,precision,'odd');
            break;
    }
    if (negative){
        return 0-retVal;
    }else{
        return retVal;
    }
}