function limitText(limitField, limitCount, limitNum,limitligne,limitlignefield) {
	if(typeof(limitligne)=="undefined")limitligne=-1
	if (limitField.value.length > limitNum) {
		limitField.value = limitField.value.substring(0, limitNum);
	} else {
		limitCount.value = limitNum - limitField.value.length;
	}
	if(limitligne>0){
		
		curRtPos=limitField.value.indexOf(String.fromCharCode(10),0);

		rtFound=0;
		while(curRtPos>0){
			rtFound++;
			if(rtFound>limitligne-1){
			debut=limitField.value.substring(0,curRtPos);
			fin=limitField.value.substring(curRtPos+1,limitField.value.length);
			limitField.value=debut+''+fin;
			}
			curRtPos=limitField.value.indexOf(String.fromCharCode(10),curRtPos+1);
		};
		if(typeof(limitlignefield)!="undefined"){
			limitlignefield.value=limitligne-rtFound-1;
			if(limitlignefield.value<0)limitlignefield.value=0;
		}
	}
}

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