function roundNumber(number,decimals) {
	var newString;// The new rounded number
	decimals = Number(decimals);
	if (decimals < 1) {
		newString = (Math.round(number)).toString();
	} else {
		var numString = number.toString();
		if (numString.lastIndexOf(".") == -1) {// If there is no decimal point
			numString += ".";// give it one at the end
		}
		var cutoff = numString.lastIndexOf(".") + decimals;// The point at which to truncate the number
		var d1 = Number(numString.substring(cutoff,cutoff+1));// The value of the last decimal place that we'll end up with
		var d2 = Number(numString.substring(cutoff+1,cutoff+2));// The next decimal, after the last one we want
		if (d2 >= 5) {// Do we need to round up at all? If not, the string will just be truncated
			if (d1 == 9 && cutoff > 0) {// If the last digit is 9, find a new cutoff point
				while (cutoff > 0 && (d1 == 9 || isNaN(d1))) {
					if (d1 != ".") {
						cutoff -= 1;
						d1 = Number(numString.substring(cutoff,cutoff+1));
					} else {
						cutoff -= 1;
					}
				}
			}
			d1 += 1;
		} 
		if (d1 == 10) {
			numString = numString.substring(0, numString.lastIndexOf("."));
			var roundedNum = Number(numString) + 1;
			newString = roundedNum.toString() + '.';
		} else {
			newString = numString.substring(0,cutoff) + d1.toString();
		}
	}
	if (newString.lastIndexOf(".") == -1) {// Do this again, to the new string
		newString += ".";
	}
	var decs = (newString.substring(newString.lastIndexOf(".")+1)).length;
	for(var i=0;i<decimals-decs;i++) newString += "0";
	//var newNumber = Number(newString);// make it a number if you like
	return newString; // Output the result to the form field (change for your purposes)
}
function nueva_ventana(url, ancho, alto, barra) {
	var sLeft, sTop;
	sLeft = (screen.width - parseInt(ancho)) / 2;
	sTop = (screen.height - parseInt(alto)) / 2;
	opciones = 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=' + barra + ',resizable=0,width=' + ancho + ',height=' + alto + ',left=' + sLeft + ',top=' + sTop + ''
	popup=window.open(url, 'popUp', opciones)
}
function abrirVentana(tipo,titulo,contenido,ancho,alto,closeEvent) {
	    Shadowbox.open({
        content:    contenido,
        player:     tipo,
        title:      titulo,
        height:     alto,
        width:      ancho,
        options: {
	        onClose:function(){eval(closeEvent)}
	    }
    });
}

function calcHeight(porcentaje) {
var altura;
if (window.innerHeight) {
altura=window.innerHeight;
}
else if (document.documentElement && document.documentElement.clientHeight) {
altura=document.documentElement.clientHeight;
}
else if (document.body) {
altura=document.body.clientHeight;
}
return altura*porcentaje/100;
}
function calcWidth(porcentaje) {
var ancho;
if (window.innerWidth) {
ancho=window.innerWidth;
}
else if (document.documentElement && document.documentElement.clientWidth) {
ancho=document.documentElement.clientWidth;
}
else if (document.body) {
ancho=document.body.clientWidth;
}
}