I'd give you a link but this comes from my desktop MSDN so heres the text sTop Variant that specifies or receives one of the following values: auto Default. Default position according to the regular HTML layout of the page. length Floating-point number, followed by an absolute units designator (cm, mm, in, pt, pc, or px) or a relative units designator (em or ex). For more information about the supported length units, see CSS Length Units Reference. percentage Integer, followed by a percent sign (%). This value is a percentage of the height of the parent object. 1 line of code equals many bugs. So don't write any!!