<input type="button" onclick="cleanWord();" value="Word清理" />

cleanWord = function(){
var editBody = FCKeditorAPI.GetInstance("text").EditorDocument.body;
var html = FCKeditorAPI.GetInstance("text").EditorDocument.body.innerText;
for(var intLoop=0;intLoop<editBody.all.length;intLoop++){
el=editBody.all[intLoop];
　　el.removeAttribute("className","",0);
　　el.removeAttribute("style","",0);
　　el.removeAttribute("font"," ",0);
}
html=html.replace(/<o:p> <//o:p>/g,"");
html=html.replace(/o:/g,"");
html=html.replace(/<font>/g,"");
html=html.replace(/<FONT>/g,"");
html=html.replace(/<span>/g,"");
html=html.replace(/<SPAN>/g,"");
html=html.replace(/<SPANlang=EN-US>/g,"");
html=html.replace(/<P>/g,"");
html=html.replace(/<//P>/g,"");
html=html.replace(/<//SPAN>/g,"");
FCKeditorAPI.GetInstance("text").EditorDocument.body.innerText=html;
}