window.addEvent('domready', function()
{
	$('ProviderSizeFrom').addEvent('change', function()
	{
		if (this.value > $('ProviderSizeTo').value)
		{
			$('ProviderSizeTo')[this.selectedIndex].selected = true;
		}
	});
	
	$('ProviderSizeTo').addEvent('change', function()
	{
		if (this.value < $('ProviderSizeFrom').value)
		{
			$('ProviderSizeFrom')[this.selectedIndex].selected = true;
		}
	});
	
	$('ProviderAgeFrom').addEvent('change', function()
	{
		if (this.value > $('ProviderAgeTo').value)
		{
			$('ProviderAgeTo')[this.selectedIndex].selected = true;
		}
	});
	
	$('ProviderAgeTo').addEvent('change', function()
	{
		if (this.value < $('ProviderAgeFrom').value)
		{
			$('ProviderAgeFrom')[this.selectedIndex].selected = true;
		}
	});
});