function getRandomIMGa() {	
	var	iMax	=	5;	//start at 0 
	var	n = Math.floor(Math.random() * iMax)+1; 
	return "<img src='i/_bnr/a"+n+".gif' class='imgpad'>"; 
}
function getRandomIMGb() {	
	var	iMax	=	5;	//start at 0 
	var	n = Math.floor(Math.random() * iMax)+1; 
	return "<img src='i/_bnr/b"+n+".gif' class='imgpad'>"; 
}
function getRandomIMGc() {	
	var	iMax	=	5;	//start at 0 
	var	n = Math.floor(Math.random() * iMax)+1; 
	return "<img src='i/_bnr/c"+n+".gif'>"; 
}

function getRandomIMGd() {	
	var	iMax	=	5;	//start at 0 
	var	n = Math.floor(Math.random() * iMax)+1; 
	return "<img src='i/_bnr2/i"+n+".gif'>"; 
}