var popupHandle;

function closeWinPopup(){
    if(popupHandle != null && !popupHandle.closed) popupHandle.close()
}

function displayWinPopup(position, url, name, height, width)
{
    
	var properties = "scroll=1,status=0,toolbar=0,location=0,height=" + height;
    properties += ",width=" + width;

    var leftprop, topprop, screenX, screenY, cursorX, cursorY, padAmt
	
	if(navigator.appName == "Microsoft Internet Explorer")
    {
	    screenY = document.body.offsetHeight
	    screenX = window.screen.availWidth
    }
    else
    { 
	    screenY = screen.height;
		screenX = screen.width;
    }

	leftvar = (screenX - width) / 2;
	rightvar = (screenY - height) / 2;
    		
	if(navigator.appName == "Microsoft Internet Explorer")
	{
		leftprop = leftvar;
		topprop = rightvar;
	}
	else
	{ 
		leftprop = (leftvar - pageXOffset);
		topprop = (rightvar - pageYOffset);
	}
    
    closeWinPopup();
    popupHandle = open(url,name,properties);
}

function UncheckMask(name, value)
{
	r = document.getElementsByTagName("input")
	for (i = 0; i < r.length; i++)
		if (r[i].name == name && r[i].value != value)
			r[i].checked = false;
}

function VerifyCheck(name)
{
	r = document.getElementsByTagName("input")
	for (i = 0; i < r.length; i++)
		if (r[i].name == name && r[i].checked)
			return true;
	return false;
}

function CreateAction(accionId, accionName, chkbId, error)
{
	if (VerifyCheck(chkbId))
	{
		accionId.value = accionName;
		accionId.form.submit();
	} 
	else 
		alert(error);
}