Optimized `equalHeights()`

jQuery.equalHeights.js

$.fn.equalHeights = function( px ) {
	
    $( this ).each( function() {
	    
        var currentElement,
            currentHeight,
            currentTallest = 0,
            children = $( this ).children();
        
	children.each( function() {
			
            currentElement = $( this );
            currentHeight = currentElement.height();
		
            if ( currentHeight > currentTallest ) currentTallest = currentHeight;
        });
		
        if ( !px || !Number.prototype.pxToEm ) currentTallest = currentTallest.pxToEm(); //use ems unless px is specified
		
        // for ie6, set height since min-height isn't supported
        if ( $.browser.msie && $.browser.version == 6.0 ) {
		   
            children.css({
                'height': currentTallest
            });
    	    
        } else {
           
            children.css({
                'min-height': currentTallest
            });
        }
    });
	
    return this;
};