(function($) {
    $.fn.slidify = function(settings) {
    	if (!this.length) {
    		return;
    	}
	
    	settings = jQuery.extend({
    		min: 0,
    		max: 3000000,
    	    stepping: 10000,
    	    unit: '$',
    		units: '',
    		valueSplit: ' to ',
    		helpText: '(Drag sliders to select range)'
    	}, settings);
    
    	//setup elements and hide inputs
    	if (settings.helpText)
    		$(this).before('<span class="slider-help">' + settings.helpText + '</span>');
    	$(this).append('<div class="ui-slider-handle low"></div><div class="ui-slider-handle hi"></div>')
    	       .children('label, input').hide();
    	$(this).after('<span class="slider-values"></span>');
    	var sliderValues = $(this).next();
    	sliderValues.append('<span class="low"></span> '+settings.valueSplit+' <span class="hi"></span>');
    	var lowText = sliderValues.children('.low');
    	var hiText = sliderValues.children('.hi');
               

        //setup common variables
    	var c = $(this).children('input');
    	var lowInput = c[0];
    	var hiInput = c[1];
	
    	//setup sliders
        $(this).slider({
            min: settings.min,
            max: settings.max,
            step: settings.stepping,
            range: true,
            slide:function(e,ui){
                //update values on slide, 
                //clear values on max and min to allow for over/under searches
                if ($(ui.handle).hasClass('low')) {
            		if (ui.value <= settings.min) {
            	        $(lowInput).val('');
            	    }
            	    else {
            	        $(lowInput).val(ui.value);
            	    }
            		$(lowText).text(humanize(ui.value, settings));
            	}
            	else if ($(ui.handle).hasClass('hi')) {
            	    if (ui.value >= settings.max) {
            	        $(hiInput).val('');
            	    }
            	    else {
            	        $(hiInput).val(ui.value);
            	    }
            		$(hiText).text(humanize(ui.value, settings));
            	}
            }
    	});
	
    	//move sliders to match input values
    	var hiVal = $(hiInput).val() || settings.max;
    	$(this).slider('values', 1, hiVal);
        $(hiText).text(humanize(hiVal, settings));
	
    	var lowVal = $(lowInput).val() || settings.min;
    	$(this).slider('values', 0, lowVal);
        $(lowText).text(humanize(lowVal, settings));
    };
    
    //private helper functions
	function shortNum(num){
    	if (num<1000)
    		return num;
    	else if (num<1000000)
    		return Math.round(num/1000) + 'k';
    	else
    		return Math.round((num/1000000)*100)/100 + 'M';
    };

   function longNum(num) {
        num += '';
    	var splitStr = num.split('.');
    	var splitLeft = splitStr[0];
    	var splitRight = splitStr.length > 1 ? '.' + splitStr[1] : '';
    	var regx = /(\d+)(\d{3})/;
    	while (regx.test(splitLeft)) {
    		splitLeft = splitLeft.replace(regx, '$1' + ',' + '$2');
    	}
    	return splitLeft + splitRight;
    };

    function humanize(num, settings) {
    	var text = '';
    	if (num >= settings.max) {
    		num = settings.max;
    		text = 'Over ';
    	}
    	if (num <= settings.min && num > 0) {
    		num = settings.min;
    		text = 'Under ';
    	}
    	if (settings.unit == '$')
    		text += '$' + shortNum(num);
    	else if (num == 1)
    		text += longNum(num) + ' ' + settings.unit;
    	else
    		text += longNum(num) + ' ' + settings.units;
    	return text;
    };
    
})(jQuery);