function soloNumeros(e){
	
	if(window.event) var keynum = e.keyCode;
	else if(e.which) var keynum = e.which;
	
	if(keynum){
		if((keynum > 47 && keynum < 58) || keynum == 8) return true;
		else return false;
	} else return true;
	
}
function soloNumerosPuntos(e){
	
	if(window.event) var keynum = e.keyCode;
	else if(e.which) var keynum = e.which;
	
	if(keynum){
		if((keynum > 47 && keynum < 58) || keynum == 8 || keynum == 46) return true;
		else return false;
	} else return true;
	
}