convertToMetric = (function () {
    var conversionList = {
    /* Volumes */
        'cup' : {'k' : 25, 'suffix' : 'cl'},
        'fl oz' : {'k' : 3, 'suffix' : 'cl'},
        'oz fl' : {'k' : 3, 'suffix' : 'cl'},
        'fluid ounce' : {'k' : 3, 'suffix' : 'cl'},
        'tbsp' : {'k' : 15, 'suffix' : 'ml'},
        'tablespoon' : {'k' : 15, 'suffix' : 'ml'},
        'tsp' : {'k' : 5, 'suffix' : 'ml'},
        'teaspoon' : {'k' : 5, 'suffix' : 'ml'},

    /* Mass */
        'oz' : {'k' : 28, 'suffix' : 'g'},
        'ounce' : {'k' : 28, 'suffix' : 'g'},
        'lb' : {'k' : 5, 'suffix' : 'hg'},
        'pound' : {'k' : 5, 'suffix' : 'hg'}
    },

    partsList = {
        189 : .5,
        190 : (3/4),
        188 : (1/4),
        8541 : (5/8)
    },

    /* Whole, Parts, Type */
    ingredientMatch = /(\d[\s]*)*?(\d+\/\d+|[½¾¼⅝])?[\s\-]*(fl[\. ]{1,2}oz|oz[\. ]{1,2}fl|[a-z]+)/gi,

    /* Temperature */
    tempMatch = /(\d+)[° ]{1,2}F/gi

    return function (text) {
        text = text.replace(ingredientMatch, function (str, whole, parts, type) {
            var result = 1*whole

            if (!whole && !parts)
                return str

            type = (type.replace(/\./g, '')).toLowerCase()

            if (!conversionList[type]) {
                type = type.slice(0, -1)
                if (!conversionList[type])
                    return str
            }

            if (/\//.test(parts)) {
                alert(parts)
                parts = parts.split('/')
                result += parts[0]/parts[1]
            } else if (partsList[parts.charCodeAt(0)]) {
                result += partsList[parts.charCodeAt(0)]
            }

            result *= conversionList[type].k

            return result + conversionList[type].suffix
        })

        text = text.replace(tempMatch, function (str, value) {
            return (1*value - 32) * (5/9)
        })

        return text
    }
})()