function soloNumeros(e){
	var code = 0; 
	if(IE || OPERA) code = event.keyCode; 
	else
	{
		if (e!=null)
			code = e.charCode;
	}
	
	if (code==0) return;
	
	var caracter = String.fromCharCode(code);
	var plant = new RegExp('\\d');
	if (!plant.test(caracter))
	{
		if(IE) event.keyCode = 0;
		else
		{
			e.stopPropagation();
			e.preventDefault();
		}
	}
	
}