/**
 * This array is used to remember mark status of rows in browse mode
 */
var marked_row = new Array;


/**
 * Sets/unsets the pointer and marker in browse mode
 *
 * @param   object    the table row
 * @param   interger  the row number
 * @param   string    the action calling this script (over, out or click)
 * @param   string    the default background color
 * @param   string    the color to use for mouseover
 * @param   string    the color to use for marking a row
 *
 * @return  boolean  whether pointer is set or not
 */
function setPointer(theRow, theRowNum, theAction, theDefaultColor, thePointerColor, theMarkColor)
{
    var theCells = null;

    // 1. Pointer and mark feature are disabled or the browser can't get the
    //    row -> exits
    if ((thePointerColor == '' && theMarkColor == '')
        || typeof(theRow.style) == 'undefined') {
        return false;
    }

    // 2. Gets the current row and exits if the browser can't get it
    if (typeof(document.getElementsByTagName) != 'undefined') {
        theCells = theRow.getElementsByTagName('td');
    }
    else if (typeof(theRow.cells) != 'undefined') {
        theCells = theRow.cells;
    }
    else {
        return false;
    }

    // 3. Gets the current color...
    var rowCellsCnt  = theCells.length;
    var domDetect    = null;
    var currentColor = null;
    var newColor     = null;
    // 3.1 ... with DOM compatible browsers except Opera that does not return
    //         valid values with "getAttribute"
    if (typeof(window.opera) == 'undefined'
        && typeof(theCells[0].getAttribute) != 'undefined') {
        currentColor = theCells[0].getAttribute('bgcolor');
        domDetect    = true;
    }
    // 3.2 ... with other browsers
    else {
        currentColor = theCells[0].style.backgroundColor;
        domDetect    = false;
    } // end 3

    // 4. Defines the new color
    // 4.1 Current color is the default one
    if (currentColor == ''
        || currentColor.toLowerCase() == theDefaultColor.toLowerCase()) {
        if (theAction == 'over' && thePointerColor != '') {
            newColor              = thePointerColor;
        }
        else if (theAction == 'click' && theMarkColor != '') {
            newColor              = theMarkColor;
            marked_row[theRowNum] = true;
        }
    }
    // 4.1.2 Current color is the pointer one
    else if (currentColor.toLowerCase() == thePointerColor.toLowerCase()
             && (typeof(marked_row[theRowNum]) == 'undefined' || !marked_row[theRowNum])) {
        if (theAction == 'out') {
            newColor              = theDefaultColor;
        }
        else if (theAction == 'click' && theMarkColor != '') {
            newColor              = theMarkColor;
            marked_row[theRowNum] = true;
        }
    }
    // 4.1.3 Current color is the marker one
    else if (currentColor.toLowerCase() == theMarkColor.toLowerCase()) {
        if (theAction == 'click') {
            newColor              = (thePointerColor != '')
                                  ? thePointerColor
                                  : theDefaultColor;
            marked_row[theRowNum] = (typeof(marked_row[theRowNum]) == 'undefined' || !marked_row[theRowNum])
                                  ? true
                                  : null;
        }
    } // end 4

    // 5. Sets the new color...
    if (newColor) {
        var c = null;
        // 5.1 ... with DOM compatible browsers except Opera
        if (domDetect) {
            for (c = 0; c < rowCellsCnt; c++) {
                theCells[c].setAttribute('bgcolor', newColor, 0);
            } // end for
        }
        // 5.2 ... with other browsers
        else {
            for (c = 0; c < rowCellsCnt; c++) {
                theCells[c].style.backgroundColor = newColor;
            }
        }
    } // end 5

    return true;
} // end of the 'setPointer()' function


var bilder = new Array();
var zaehler = 0;

var images_pfad = "images/";

function preload (bild1,bild2,link)
{
	bilder[zaehler] = new Array(3);

	bilder[zaehler][0] = new Image ();	
	bilder[zaehler][0].src = images_pfad+bild1;
	bilder[zaehler][1] = new Image ()
	bilder[zaehler][1].src = images_pfad+bild2;
	bilder[zaehler][2] = link;
	++zaehler;
}


// ******************
//
// Rollover
//


function over (bild)
{
if (!document.images)
	return;
for (i=0;i<zaehler;i++)
	{
	if (bilder[i][2] == bild)
		document.images[bilder[i][2]].src = bilder[i][1].src;
	}
}

function out (bild)
{		 
if (!document.images)
	return;
for (i=0;i<zaehler;i++)
	{
	if (bilder[i][2] == bild)
		{
		document.images[bilder[i][2]].src = bilder[i][0].src;
		}
	}
}

// Fenster-zeuchs

browser = navigator.appName;
version = navigator.appVersion.substring(0,1);


// *** fenster oeffnen
function openwin2 (url,x,y,element)
	{
	if (document.layers)
		{
		open_win2(url,x,y,element); fenster_2.focus();
		}
	else
		{
		if ( window.fenster_2 )
			{
			fenster_2.close ();
			while (!fenster_2.closed)
				{
				}
			open_win2(url,x,y,element);
			}
		else
			open_win2(url,x,y,element);
		}
	}

function openwin1 (url,x,y,element)
	{
	if (document.layers)
		{
		open_win1(url,x,y,element); fenster_1.focus();
		}
	else
		{
		if ( window.fenster_1 )
			{
			fenster_1.close ();
			while (!fenster_1.closed)
				{
				}
			open_win1(url,x,y,element);
			}
		else
			open_win1(url,x,y,element);
		}
	}

function open_win3 (url,x,y,element)
{
fenster_3 = window.open (url,"fenster3","width=" + x +",height=" + y + element);		
fenster_3.focus ();
}

function open_win2 (url,x,y,element)
{
fenster_2 = window.open (url,"fenster2","menubar=no,scrollbars=yes,resizable=no,width=" + x +",height=" + y + element);		
fenster_2.focus ();
}
function open_win1 (url,x,y,element)
{
fenster_1 = window.open (url,"fenster1","menubar=no,scrollbars=no,status=yes,resizable=yes,width=" + x +",height=" + y + element);		
fenster_1.focus ();
}

/*function geschichtederms ()
{
openwin2('geschichtederms.htm',786,542,',scrollbars=no,resizable=yes,menubar=no,status=no')
}
*/

function kongress ()
{
openwin2('../kongress/engl/index2.htm',786,393 ,',scrollbars=no,resizable=no,menubar=no,status=no');
}

function emailcheck (email) 
{
return;
muster = /^[a-zA-Z0-9-\.-_]+@[a-zA-Z0-9-]{2,}\.([a-zA-Z]{2,}\.[a-zA-Z]{2,}|[a-zA-Z]{2,})$/;
if (muster.test(email)) 
	return true;
else
	{
	return false;
	}

}