function addcomma(Astr){
	var result=Astr;
	if(result.charAt(0)!=","){
		result=","+result;
	}
	if(result.charAt(result.length-1)!=","){
		result=result+",";
	}
	return result;
}

function deletecomma(Astr){
	var result=Astr;
	if(result.charAt(0)==","){
		result=result.substring(1,result.length-1);
	}
	if(result.charAt(result.length-1)==","){
		result=result.substring(0,result.length-2);
	}
	return result;
}

function dC(Astr,dstr){
	var result=Astr;
	result=addcomma(result);
	dstr=","+dstr+",";
	result=result.replace(dstr,",");
	result=deletecomma(result);
 
	return result;
}

function interest(o,destinc){
	var kvalue=o.value; 
	var obj="#"+destinc;
	var currentval= $(obj).val(); 
	if (o.checked){
		if(currentval.indexOf(kvalue)<0){
			var resutlvalue=$(obj).val()+','+kvalue;
			resutlvalue=addcomma(resutlvalue);
			resutlvalue=deletecomma(resutlvalue);
			$(obj).val(resutlvalue);
		}
	}else{
			currentval=dC(currentval,kvalue);
			$(obj).val(currentval);
		}
}

function ismaxlength(obj){
	var mlength=obj.getAttribute? parseInt(obj.getAttribute("maxlength")) : "";
	if (obj.getAttribute && obj.value.length>mlength){
		obj.value=obj.value.substring(0,mlength);
	}
}