function is_numeric( mixed_var ) {
    return !isNaN( mixed_var );
}

function explode( delimiter, string ) {
    var emptyArray = { 0: '' };
 
    if ( arguments.length != 2
        || typeof arguments[0] == 'undefined'
        || typeof arguments[1] == 'undefined' )
    {
        return null;
    }
 
    if ( delimiter === ''
        || delimiter === false
        || delimiter === null )
    {
        return false;
    }
 
    if ( typeof delimiter == 'function'
        || typeof delimiter == 'object'
        || typeof string == 'function'
        || typeof string == 'object' )
    {
        return emptyArray;
    }
 
    if ( delimiter === true ) {
        delimiter = '1';
    }
 
    return string.toString().split ( delimiter.toString() );
}

function deleteCookie(name, path, domain) {
        if (getCookie(name)) {
                document.cookie = name + "=" + 
                ((path) ? "; path=" + path : "") +
                ((domain) ? "; domain=" + domain : "") +
                "; expires=Thu, 01-Jan-70 00:00:01 GMT";
        }
}


function setCookie( name, value, expires, path, domain, secure ){
	// set time, it's in milliseconds
	var today = new Date();
	today.setTime( today.getTime() );

	document.cookie = name + "=" +escape( value ) +
	( ( expires ) ? ";expires=" + expires : "" ) +
	( ( path ) ? ";path=" + path : "" ) +
	( ( domain ) ? ";domain=" + domain : "" ) +
	( ( secure ) ? ";secure" : "" );
}

// this fixes an issue with the old method, ambiguous values
// with this test document.cookie.indexOf( name + "=" );
function getCookie( check_name ) {
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f

	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );


		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}

//функция добавления одного товара в корзину
function addItemToBasket(tovarId, quantity){
	myDate = new Date();
	myDate.setTime(myDate.getTime()+ 100 * 1000 * 60 * 60 * 24); // 100 дней
	Expire = myDate.toGMTString();
	C = (isNaN(parseInt(getCookie(tovarId))) ? 0 : parseInt(getCookie(tovarId))) +  (isNaN(parseInt(quantity)) ? 1 : parseInt(quantity));
	setCookie(tovarId, C, Expire, '/', location.hostname);
	document.getElementById('i'+tovarId).value = 'кол.';
}

//массовое добавление товаров (classname - имя класса для инпутов с количеством)
function addItemsToBasket(classname){
jQuery("."+classname).each(
	function () {
		if(jQuery(this).attr("value") != undefined && jQuery(this).attr("value") != 'кол.'){
			addItemToBasket(jQuery(this).attr("id"),jQuery(this).attr("value"));
			//очищаем значение инпута
			jQuery(this).attr("value","кол.");
			}
		}
	);
return true;
}