function formatDecimal(num,f){
	var i;
	i=num.substring(num.length-f,num.length);
	num=num.substring(0,num.length-f)+"."+i;
	return num;	
}
function formatnumber(num,f){
	
	var s=""+num;
	var real = "";
	var real2 = "";
	var frac = "";
	if (s.indexOf(".")!=-1) {
		real=s.substring(0,s.indexOf("."));
		frac=s.substring(s.indexOf(".")+1);
	} else {
		real=s;
		frac="00";
	}
	while (real.length>3) {
		real2=","+real.substring(real.length-3,real.length);
		real=real.substring(0,real.length-(3))
	}
	
	s=real+real2
	if (f>0) {
		s=s+"."+frac;
	}
	return s;
}

function udf(x){
	x=""+x
	if(x=="undefined")return true
	else return false
}