function fbRollOver(target){
	var t=target.src;
	var ar = t.split(".");
	ar[ar.length-2] = ar[ar.length-2]+"_over";
	var result = ar.join(".");
	target.src=result;
	//alert(result);
}
function fbRollOut(target){
	var t=target.src;
	var result = t.split("_over").join("");
	target.src=result;
	//alert(result);
}