function showPopup( popupWidth, popupHeight, myImage, mainpath ) {
	myScreenHeight = screen.availHeight;
	myScreenWidth  = screen.availWidth;
	
	popupWidth  += 200;
	popupHeight += 200;
	
	myYPos = (myScreenHeight - popupHeight) / 2;
	myXPos = (myScreenWidth - popupWidth) / 2;
	
	if ( typeof myPopup != 'undefined' ) {
		myPopup.close();
	} // if ( typeof myPopup != 'undefined' )
	
	myPopup = window.open(mainpath+'popup.php?image=' + myImage, "Popup", "width=" + popupWidth + ",height=" + popupHeight + ",left=" + myXPos + ",top=" + myYPos);
    myPopup.focus();	
} // function showPopup( myImage )




function showPopupFixsize(myImage, mainpath) {
	myScreenHeight = screen.availHeight;
	myScreenWidth  = screen.availWidth;
	
	popupWidth  = 840;
	popupHeight = 680;
	
	myYPos = (myScreenHeight - popupHeight) / 2;
	myXPos = (myScreenWidth - popupWidth) / 2;
	
	if ( typeof myPopup != 'undefined' ) {
		myPopup.close();
	} // if ( typeof myPopup != 'undefined' )
	
	myPopup = window.open(mainpath+'popup.php?pathFixsize=leistungen&image=' + myImage, "Popup", "width=" + popupWidth + ",height=" + popupHeight + ",left=" + myXPos + ",top=" + myYPos );
    myPopup.focus();	
} // function showPopup( myImage )