function optionsCheck(thisForm)
{
        if (thisForm.ElimSimilarity.checked)
	{ 
		thisForm.SimilarityCutValue.disabled = false;
	}
	else	{
		thisForm.SimilarityCutValue.disabled = true;
		thisForm.UppercaseLetters[0].disabled = false;
		thisForm.UppercaseLetters[1].disabled = false;
		thisForm.CleanSeqs[0].disabled = false;
		thisForm.CleanSeqs[1].disabled = false;
		thisForm.ElimSubSequences[0].disabled = false;
		thisForm.ElimSubSequences[1].disabled = false;
	}
}