(javascript & css) Where is the syntax error?

[msimmons]

Sorry, should have given more info.

DivDay = 'cell1_7';
parent.frames[0].document.getElementById(DivDay).style.background = '#cccccc';
parent.frames[0].document.getElementById(DivDay).style.cursor = 'default';
parent.frames[0].document.getElementById(DivDay).style.z-index = '-1';

Good try though... Thats my error 99% of the time
Michael