function getRandomPort() 
{
	//alert("in GRP");
	var rnd=Math.floor(Math.random()*7)
	switch(rnd)
	{
	case 1:
	  //firstPotomac
	  selectImage('potomac');
	  break;    
	case 2:
	  //JBGCos
	  selectImage('JBGCos');
	  break;
	case 3:
	  //arentFox
	  selectImage('arentFox');
	  break;
	case 4:
	  //Buchanan
	  selectImage('buchanan');
	  break;
	case 5:
	  //UBC
	  selectImage('brotherhood');
	  break;
	case 6:
	  //Bristol Myers
	  selectImage('aloft');
	  break;
	case 7:
	  //Kutak
	  selectImage('kutak');
	  break;
	default:
	  selectImage('potomac');
	  break;
	}
}