// ***********************************************
// NAME     : Common.js
// AUTHOR   : Atos Origin
// ************************************************ 

function ElementVisible(elementId, visibility)
{
	var thisElement = document.getElementById(elementId);
	if (thisElement && thisElement.style)
	{
		if (visibility == true)
		{
			thisElement.style.display='';
		}
		else
		{
			thisElement.style.display='none';
		}
	}
}


function toggleVisibility(elementID) {

    var thisElement = document.getElementById(elementID);

    if (thisElement.style.display == 'none')

        thisElement.style.display = '';

    else

        thisElement.style.display = 'none';
}

function toggleInputBoxValue(elementID, valDefault, valToggleTo) {
    
    var thisElement = document.getElementById(elementID);

    if (thisElement != undefined && thisElement) {
        if (thisElement.nodeName.toLowerCase() == 'input') {
            if (thisElement.value == valDefault)

                thisElement.value = valToggleTo;

            else
            
                thisElement.value = valDefault
        }
    }
}

function toggleCSSClass(cssclass1, cssclass2) {

    var elements = document.getElementsByTagName('*');
    for (i = 0; i < elements.length; i++) {
        if (elements[i].className == cssclass1) {
            elements[i].className = cssclass2;
        }
        else if (elements[i].className == cssclass2) {
            elements[i].className = cssclass1;
        }
    }
}

// Validates a date
//isDate(y: Integer, m: Integer, d: Integer): Integer
//    		Checks a date and returns 0 if it's valid or one of the error codes bellow.

//    y        year
//    m        month
//    d        day

//isDate(date: String, matcher: RegExp, map: Object): Integer
//    		Checks a date and returns 0 if it's valid or one of the error codes bellow.
//    date        date in a string form
//    matcher     regular expression responsible to find and store the day, month and year
//    map        object containing the position where each date component is localized inside the regular expression. Its format is the following: {d: positionOfTheDay, m: positionOfTheMonth, y: positionOfTheYear}
//
// returns error codes:
//      0 = Valid date
// 	    1 = Date format invalid (regular expression failed or amount of arguments != 3)
//	    2 = Day isn't between 1 and 31
// 	    3 = Month isn't between 1 and 12
// 	    4 = On April, June, September and November there isn't the day 31
// 	    5 = On February the month has only 28 days
// 	    6 = Leap year, February has only 29 days
//
// Reference : http://jsfromhell.com/geral/is-date

function isDate(y, m, d) {
    if (typeof y == "string" && m instanceof RegExp && d) {
        if (!m.test(y)) return 1;
        y = RegExp["$" + d.y], m = RegExp["$" + d.m], d = RegExp["$" + d.d];
    }
    d = Math.abs(d) || 0, m = Math.abs(m) || 0, y = Math.abs(y) || 0;
    return arguments.length != 3 ? 1 : d < 1 || d > 31 ? 2 : m < 1 || m > 12 ? 3 : /4|6|9|11/.test(m) && d == 31 ? 4
        : m == 2 && (d > ((y = !(y % 4) && (y % 1e2) || !(y % 4e2)) ? 29 : 28)) ? 5 + !!y : 0;
};

// Checks if date is in past
function isDateInPast(date) {
    if (!(date instanceof Date)) {
        return false;
    }
    else {
        var today = new Date();
        today.setHours(0, 0, 0, 0);
        return date.getTime() < today.getTime();
    }
}