function validate(e){
	var code;
	if (!e) var e = window.event;
	if (e.keyCode) code = e.keyCode;
	else if (e.which) code = e.which;
	if (code < '13' || code > '13'){
		if (code < '48' || code > '57')event.returnValue=false;
	}
}
function dontleaveempty(id,name,num){
	var inputfieldvalue=eval(id+"."+name+".value");
	if (!inputfieldvalue)eval(id+"."+name+".value="+num);
	//var inputfieldvalue=eval("document."+id+"."+name+".value");
	//if (!inputfieldvalue)eval("document."+id+"."+name+".value="+num);
}