function menu_link(num)
{
	switch(num)

	{

	  case 1:window.location="bone.shtml" ;break;

	  case 2:window.location="bone_institute.shtml" ;break;

	  case 3:window.location="bone_central.shtml" ;break;

	  case 4:window.location="neutraceuticals.shtml" ;break;

	  case 5:window.location="research.shtml" ;break;

	  case 6:window.location="http://stores.homestead.com/steinerlabs/" ;break;

	}
}