var tab1Status = false;
var tab2Status = false;
var tab3Status = false;
var tab4Status = false;

function ToggleServiceButtons(tab) {
	if (tab == 'tab1')
	{
		if (tab1Status == false)
		{
			MM_swapImage('service-tab1-button','','images/sidebar-tab1-minus.png',1);
			tab1Status = true;
		}
		else
		{
			MM_swapImage('service-tab1-button','','images/sidebar-tab1-plus.png',1);
			tab1Status = false;
		}
	}
	if (tab == 'tab2')
	{
		if (tab2Status == false)
		{
			MM_swapImage('service-tab2-button','','images/sidebar-tab2-minus.png',1);
			tab2Status = true;
		}
		else
		{
			MM_swapImage('service-tab2-button','','images/sidebar-tab2-plus.png',1);
			tab2Status = false;
		}
	}
	if (tab == 'tab3')
	{
		if (tab3Status == false)
		{
			MM_swapImage('service-tab3-button','','images/sidebar-tab3-minus.png',1);
			tab3Status = true;
		}
		else
		{
			MM_swapImage('service-tab3-button','','images/sidebar-tab3-plus.png',1);
			tab3Status = false;
		}
	}
	if (tab == 'tab4')
	{
		if (tab4Status == false)
		{
			MM_swapImage('service-tab4-button','','images/sidebar-tab4-minus.png',1);
			tab4Status = true;
		}
		else
		{
			MM_swapImage('service-tab4-button','','images/sidebar-tab4-plus.png',1);
			tab4Status = false;
		}
	}
}