function men_OVE(OP) {
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      if (nom==OP && nom.indexOf('O_0')!=-1){oTD[nTD-1].className="opOV4";}
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    var oTD = document.getElementsByTagName("td");
    var nTD = oTD.length;
    do
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      if (nom.indexOf('O_1')!=-1){oTD[nTD-1].className="opOU1";}
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	}