function drawShipsWithNotAvailableIds(shipsWithNotAvailableIdsAR,seaAreaIdPrefics,drawOperation){
try{

var shipColor;
var notAvlbColor;
switch(drawOperation){
case 'draw':
shipColor = 'Red';
notAvlbColor ='Gray';
break;
case 'clear':
shipColor ='blue';
notAvlbColor = 'Blue';
break;
}
....
elmtShipId.style.backgroundColor=shipColor;
elmtNotAvlbId.style.backgroundColor=notAvlbColor;
}

I want to pass two parameters : shipColor, norAvlbColor
function drawShipsWithNotAvailableIds(shipsWithNotAvailableIdsAR,seaAreaIdPrefics,drawOperation,
shipColor, norAvlbColor )

How can does it do ? thanks