red color

{refresh}
var d1 = new Date(_lookup('this..CUSTOMER_PO_DATE'));
var d1add= dateCal(d1,4);
var d2 = new Date(_lookup('this.id'));
if (d2>d1add){$('.SALES_ORDER_HEAD_ENTRY_DATE').css('color', 'red');} else {$('.SALES_ORDER_HEAD_ENTRY_DATE').css('color', 'black');};
{/refresh}