function doFilter(lg) {
	
	var append = "";
	
	if($('filter1'))
	{
		var filter1 = $F('filter1');
		append += '&filter1=' + filter1;
	}
	if($('filter2'))
	{
		var filter2 = $F('filter2');
		append += '&filter2=' + filter2;
	}
	if($('filter3'))
	{
		var filter3 = $F('filter3');
		append += '&filter3=' + filter3;
	}
	if($('filter4'))
	{
		var filter4 = $F('filter4');
		append += '&filter4=' + filter4;
	}

	var pcid = $('pcid');
	
	var url = '/main/'+lg+'/getProductTableContent.php';
	var pars = "pcid=" + pcid.value + append;
	var myAjax = new Ajax.Request(
					url,
					{
						method: 'get',
						parameters: pars,
						onComplete: showFilterResponse
					});
} //end func

function showFilterResponse(originalRequest)
{
	//put returned XML in the textarea
	$('prodlist_tab').innerHTML = originalRequest.responseText;
}

// clears all filters and sets them to default value 0; shows the initial table view
function resetFilters(lg)
{
	if($('filter1'))
	{
		$('filter1').selectedIndex = 0;
	}
	if($('filter2'))
	{
		$('filter2').selectedIndex = 0;

	}
	if($('filter3'))
	{
		$('filter3').selectedIndex = 0;
	}
	if($('filter4'))
	{
		$('filter4').selectedIndex = 0;
	}

	var pcid = $('pcid');
	
	var url = '/main/'+lg+'/getProductTableContent.php';
	var pars = "pcid=" + pcid.value;
	var myAjax = new Ajax.Request(
					url,
					{
						method: 'get',
						parameters: pars,
						onComplete: showFilterResponse
					});
}