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i did not have your original mesage 

here is what i use to do a saveas 

<SCRIPT> 
function SaveGraph() 
{ 

strTextPowerText.document.execCommand('SaveAs') 
return false; 

} 

</SCRIPT> 

href="#" onClick="return SaveGraph()"> 

if you want to save the hole document then take out the strtext..... 
hope this helps you