/***********************************
**      File: dynCalendar.js      **
**  Modified: 2009-01-11          **
**   Version: 1.0                 **
** Copyright: 1TOPF entertainment **
**    E-Mail: support@1topf.com   **
***********************************/

dynCalendar_layers = new Array();
dynCalendar_mouseoverStatus = false;
dynCalendar_mouseX = 0;
dynCalendar_mouseY = 0;

function dynCalendar(objName, callbackFunc)
{
	this.today = new Date();
	this.date = this.today.getDate();
	this.month = this.today.getMonth();
	this.year = this.today.getFullYear();

	this.objName = objName;
	this.callbackFunc = callbackFunc;
	this.imagesPath = arguments[2] ? arguments[2] : './images/style/';
	this.layerID = arguments[3] ? arguments[3] : 'dynCalendar_layer_' + dynCalendar_layers.length;
	
	this.offsetX = 5;
	this.offsetY = 5;

	this.useMonthCombo = true;
	this.useYearCombo = true;
	this.yearComboRange = 5;

	this.currentMonth = this.month;
	this.currentYear = this.year;

	this.show = dynCalendar_show;
	this.writeHTML = dynCalendar_writeHTML;

	this.setOffset = dynCalendar_setOffset;
	this.setOffsetX = dynCalendar_setOffsetX;
	this.setOffsetY = dynCalendar_setOffsetY;
	this.setImagesPath = dynCalendar_setImagesPath;
	this.setMonthCombo = dynCalendar_setMonthCombo;
	this.setYearCombo = dynCalendar_setYearCombo;
	this.setCurrentMonth = dynCalendar_setCurrentMonth;
	this.setCurrentYear = dynCalendar_setCurrentYear;
	this.setYearComboRange = dynCalendar_setYearComboRange;

	this._getLayer = dynCalendar_getLayer;
	this._hideLayer = dynCalendar_hideLayer;
	this._showLayer = dynCalendar_showLayer;
	this._setLayerPosition = dynCalendar_setLayerPosition;
	this._setHTML = dynCalendar_setHTML;

	this._getDaysInMonth = dynCalendar_getDaysInMonth;
	this._mouseover = dynCalendar_mouseover;

	dynCalendar_layers[dynCalendar_layers.length] = this;
	this.writeHTML();
}

function dynCalendar_show()
{
	var month, year, monthnames, numdays, thisMonth, firstOfMonth;
	var ret, row, i, cssClass, linkHTML, previousMonth, previousYear;
	var nextMonth, nextYear, prevImgHTML, prevLinkHTML, nextImgHTML, nextLinkHTML;
	var monthComboOptions, monthCombo, yearComboOptions, yearCombo, html;

	this.currentMonth = month = arguments[0] != null ? arguments[0] : this.currentMonth;
	this.currentYear  = year  = arguments[1] != null ? arguments[1] : this.currentYear;

	monthnames = new Array('Januar', 'Februar', 'März', 'April', 'Mai', 'Juni', 'Juli', 'August', 'Sep.', 'Oktober', 'Nov.', 'Dez.');
	numdays = this._getDaysInMonth(month, year);

	thisMonth = new Date(year, month, 1);
	firstOfMonth = thisMonth.getDay();
	
	if(firstOfMonth==0)
	{
		firstOfMonth = 7;
	}
	ret = new Array(new Array());
	
	for(i=1; i<firstOfMonth; i++)
	{
		ret[0][ret[0].length] = '<td class="dynCalender_outOfMonth" style="width:' + (100/7) + '%;">&nbsp;</td>';
	}
	
	row = 0;
	i   = 1;
		
	while(i <= numdays)
	{
		thisDay = new Date(year, month, i);
		weakDay = thisDay.getDay();
		
		if(ret[row].length == 7)
		{
			ret[++row] = new Array();
		}
		if(weakDay == 0 || weakDay == 6)
		{
			cssClass = (i == this.date && month == this.month && year == this.year) ? 'dynCalendar_today' : 'dynCalendar_weekend';
		}
		else
		{
			cssClass = (i == this.date && month == this.month && year == this.year) ? 'dynCalendar_today' : 'dynCalendar_day';
		}
		linkHTML = '<a href="javascript: ' + this.callbackFunc + '(' + i + ', ' + (Number(month) + 1) + ', ' + year + '); ' + this.objName + '._hideLayer()">' + (i++) + '</a>';
		ret[row][ret[row].length] = '<td class="' + cssClass + '" style="width:' + (100/7) + '%;">' + linkHTML + '</td>';
	}
	
	for(i=0; i<ret.length; i++)
	{
		ret[i] = ret[i].join('\n') + '\n';
	}

	previousYear  = thisMonth.getFullYear();
	previousMonth = thisMonth.getMonth() - 1;
	
	if(previousMonth < 0)
	{
		previousMonth = 11;
		previousYear--;
	}
	nextYear  = thisMonth.getFullYear();
	nextMonth = thisMonth.getMonth() + 1;
	
	if(nextMonth > 11)
	{
		nextMonth = 0;
		nextYear++;
	}
	prevImgHTML = '&laquo;';
	prevLinkHTML = '<a href="javascript:' + this.objName + '.show(' + previousMonth + ', ' + previousYear + ')" title="Zur&uuml;ck">' + prevImgHTML + '</a>';
	nextImgHTML = '&raquo;';
	nextLinkHTML = '<a href="javascript:' + this.objName + '.show(' + nextMonth + ', ' + nextYear + ')" title="Weiter">' + nextImgHTML + '</a>';
	
	if(this.useMonthCombo)
	{
		monthComboOptions = '';
		
		for (i=0; i<12; i++)
		{
			selected = (i == thisMonth.getMonth() ? 'selected="selected"' : '');
			monthComboOptions += '<option value="' + i + '" ' + selected + '>' + monthnames[i] + '</option>';
		}
		monthCombo = '<select name="months" onchange="' + this.objName + '.show(this.options[this.selectedIndex].value, ' + this.objName + '.currentYear)">' + monthComboOptions + '</select>';
	}
	else
	{
		monthCombo = monthnames[thisMonth.getMonth()];
	}
		
	if(this.useYearCombo)
	{
		yearComboOptions = '';
		
		for(i = thisMonth.getFullYear() - this.yearComboRange; i <= (thisMonth.getFullYear() + this.yearComboRange); i++)
		{
			selected = (i == thisMonth.getFullYear() ? 'selected="selected"' : '');
			yearComboOptions += '<option value="' + i + '" ' + selected + '>' + i + '</option>';
		}
		yearCombo = '<select style="border:1px groove" name="years" onchange="' + this.objName + '.show(' + this.objName + '.currentMonth, this.options[this.selectedIndex].value)">' + yearComboOptions + '</select>';
	}
	else
	{
		yearCombo = thisMonth.getFullYear();
	}
	html = '<table style="width:155px;" cellspacing="1" cellpadding="0" border="0">';
	html += '<tr><td class="dynCalendar_header">' + prevLinkHTML + '</td><td class="dynCalendar_header" colspan="5">' + monthCombo + ' ' + yearCombo + '</td><td align="right" class="dynCalendar_header">' + nextLinkHTML + '</td></tr>';
	html += '<tr>';
	html += '<td class="dynCalendar_dayname">Mo</td>';
	html += '<td class="dynCalendar_dayname">Di</td>';
	html += '<td class="dynCalendar_dayname">Mi</td>';
	html += '<td class="dynCalendar_dayname">Do</td>';
	html += '<td class="dynCalendar_dayname">Fr</td>';
	html += '<td class="dynCalendar_dayname">Sa</td>';
	html += '<td class="dynCalendar_dayname">So</td></tr>';
	html += '<tr><td class="dynCalendar_dayname_border" colspan="7"><img src="' + this.imagesPath + 'space.gif" alt="Spacer" title="Spacer" border="0" style="width:1px; height:5px;"></td></tr>';
	html += '<tr>' + ret.join('</tr>\n<tr>') + '</tr>';
	html += '</table>';

	this._setHTML(html);

	if(!arguments[0] && !arguments[1])
	{
		this._showLayer();
		this._setLayerPosition();
	}
}

function dynCalendar_writeHTML()
{
	if (is_ie5up || is_nav6up || is_gecko)
	{
		document.write('<a href="javascript:' + this.objName + '.show()" alt="Kalender benutzen" title="Kalender benutzen" border="0">Kalender benutzen</a>');
		document.write('<div class="dynCalendar" id="' + this.layerID + '" onmouseover="' + this.objName + '._mouseover(true)" onmouseout="' + this.objName + '._mouseover(false)"></div>');
	}
}

function dynCalendar_setOffset(Xoffset, Yoffset)
{
	this.setOffsetX(Xoffset);
	this.setOffsetY(Yoffset);
}

function dynCalendar_setOffsetX(Xoffset)
{
	this.offsetX = Xoffset;
}

function dynCalendar_setOffsetY(Yoffset)
{
	this.offsetY = Yoffset;
}
	
function dynCalendar_setImagesPath(path)
{
	this.imagesPath = path;
}

function dynCalendar_setMonthCombo(useMonthCombo)
{
	this.useMonthCombo = useMonthCombo;
}

function dynCalendar_setYearCombo(useYearCombo)
{
	this.useYearCombo = useYearCombo;
}

function dynCalendar_setCurrentMonth(month)
{
	this.currentMonth = month;
}

function dynCalendar_setCurrentYear(year)
{
	this.currentYear = year;
}

function dynCalendar_setYearComboRange(range)
{
	this.yearComboRange = range;
}

function dynCalendar_getLayer()
{
	var layerID = this.layerID;

	if (document.getElementById(layerID))
	{
		return document.getElementById(layerID);
	}
	else if(document.all(layerID))
	{
		return document.all(layerID);
	}
}

function dynCalendar_hideLayer()
{
	this._getLayer().style.visibility = 'hidden';
}

function dynCalendar_showLayer()
{
	this._getLayer().style.visibility = 'visible';
}

function dynCalendar_setLayerPosition()
{
	this._getLayer().style.top  = (dynCalendar_mouseY + this.offsetY) + 'px';
	this._getLayer().style.left = (dynCalendar_mouseX + this.offsetX) + 'px';
}

function dynCalendar_setHTML(html)
{
	this._getLayer().innerHTML = html;
}

function dynCalendar_getDaysInMonth(month, year)
{
	monthdays = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
	
	if(month != 1)
	{
		return monthdays[month];
	}
	else
	{
		return ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0 ? 29 : 28);
	}
}

function dynCalendar_mouseover(status)
{
	dynCalendar_mouseoverStatus = status;
	return true;
}
dynCalendar_oldOnmousemove = document.onmousemove ? document.onmousemove : new Function;

document.onmousemove = function()
{
	if(is_ie5up || is_nav6up || is_gecko)
	{
		if(arguments[0])
		{
			dynCalendar_mouseX = arguments[0].pageX;
			dynCalendar_mouseY = arguments[0].pageY;
		}
		else
		{
			dynCalendar_mouseX = event.clientX + document.body.scrollLeft;
			dynCalendar_mouseY = event.clientY + document.body.scrollTop;
			arguments[0] = null;
		}
		dynCalendar_oldOnmousemove();
	}
}
dynCalendar_oldOnclick = document.onclick ? document.onclick : new Function;

document.onclick = function()
{
	if(is_ie5up || is_nav6up || is_gecko)
	{
		if(!dynCalendar_mouseoverStatus)
		{
			for(i=0; i<dynCalendar_layers.length; ++i)
			{
				dynCalendar_layers[i]._hideLayer();
			}
		}
		dynCalendar_oldOnclick(arguments[0] ? arguments[0] : null);
	}
}