var browser = 'leer' ;

if (document.styleSheets && document.all) {browser = 'ie' ;}
else if (document.getElementsByTagName) {browser = 'ns' ;}
if (document.all && !document.styleSheets) {browser = 'opera' ;}


var praefix = "ctrlMainMenu_";

function showSubMenu(SubMenu)
	{
	if (browser == "ie" || browser == "opera")
		{
		switch (SubMenu)
			{
			case "Firmenprofil" :
				document.all(praefix + 'divSubMenuFirmenprofil').style.display = "block";
				document.all(praefix + 'divSubMenuAuslandspraktikum').style.display = "none";
				document.all(praefix + 'divSubMenuService').style.display = "none";
				document.all(praefix + 'divSubMenuKontakt').style.display = "none";
				break;
			case "Auslandspraktikum" :
				document.all(praefix + 'divSubMenuFirmenprofil').style.display = "none";
				document.all(praefix + 'divSubMenuAuslandspraktikum').style.display = "block";
				document.all(praefix + 'divSubMenuService').style.display = "none";
				document.all(praefix + 'divSubMenuKontakt').style.display = "none";
				break;
			case "Service" :
				document.all(praefix + 'divSubMenuFirmenprofil').style.display = "none";
				document.all(praefix + 'divSubMenuAuslandspraktikum').style.display = "none";
				document.all(praefix + 'divSubMenuService').style.display = "block";
				document.all(praefix + 'divSubMenuKontakt').style.display = "none";
				break;
			case "Kontakt" :
				document.all(praefix + 'divSubMenuFirmenprofil').style.display = "none";
				document.all(praefix + 'divSubMenuAuslandspraktikum').style.display = "none";
				document.all(praefix + 'divSubMenuService').style.display = "none";
				document.all(praefix + 'divSubMenuKontakt').style.display = "block";
				break;
			}
		}
	else
		{
		switch (SubMenu)
			{
			case "Firmenprofil" :
				eval('document.getElementById("' + praefix + 'divSubMenuFirmenprofil").style.display = "block"');
				eval('document.getElementById("' + praefix + 'divSubMenuAuslandspraktikum").style.display = "none"');
				eval('document.getElementById("' + praefix + 'divSubMenuService").style.display = "none"');
				eval('document.getElementById("' + praefix + 'divSubMenuKontakt").style.display = "none"');
				break;
			case "Auslandspraktikum" :
				eval('document.getElementById("' + praefix + 'divSubMenuFirmenprofil").style.display = "none"');
				eval('document.getElementById("' + praefix + 'divSubMenuAuslandspraktikum").style.display = "block"');
				eval('document.getElementById("' + praefix + 'divSubMenuService").style.display = "none"');
				eval('document.getElementById("' + praefix + 'divSubMenuKontakt").style.display = "none"');
				break;
			case "Service" :
				eval('document.getElementById("' + praefix + 'divSubMenuFirmenprofil").style.display = "none"');
				eval('document.getElementById("' + praefix + 'divSubMenuAuslandspraktikum").style.display = "none"');
				eval('document.getElementById("' + praefix + 'divSubMenuService").style.display = "block"');
				eval('document.getElementById("' + praefix + 'divSubMenuKontakt").style.display = "none"');
				break;
			case "Kontakt" :
				eval('document.getElementById("' + praefix + 'divSubMenuFirmenprofil").style.display = "none"');
				eval('document.getElementById("' + praefix + 'divSubMenuAuslandspraktikum").style.display = "none"');
				eval('document.getElementById("' + praefix + 'divSubMenuService").style.display = "none"');
				eval('document.getElementById("' + praefix + 'divSubMenuKontakt").style.display = "block"');
				break;
			}
		}
	}

function hideSubMenus(SubMenu)
	{
	// alert(typeof(SubMenu));
	// alert(SubMenu);
	if (browser == "ie" || browser == "opera")
		{
		if (typeof(SubMenu) != "undefined")
			{
			switch (SubMenu)
				{
				case "Firmenprofil" :
					document.all(praefix + 'divSubMenuFirmenprofil').style.display = "none";
					break;
				case "Auslandspraktikum" :
					document.all(praefix + 'divSubMenuAuslandspraktikum').style.display = "none";
					break;
				case "Service" :
					document.all(praefix + 'divSubMenuService').style.display = "none";
					break;
				case "Kontakt" :
					document.all(praefix + 'divSubMenuKontakt').style.display = "none";
					break;
				}			
			}
		else
			{
			document.all(praefix + 'divSubMenuFirmenprofil').style.display = "none";
			document.all(praefix + 'divSubMenuAuslandspraktikum').style.display = "none";
			document.all(praefix + 'divSubMenuService').style.display = "none";
			document.all(praefix + 'divSubMenuKontakt').style.display = "none";
			}
		}
	else
		{
		if (typeof(SubMenu) != "undefined")
			{
			switch (SubMenu)
				{
				case "Firmenprofil" :
					eval('document.getElementById("' + praefix + 'divSubMenuFirmenprofil").style.display = "none"');
					break;
				case "Auslandspraktikum" :
					eval('document.getElementById("' + praefix + 'divSubMenuAuslandspraktikum").style.display = "none"');
					break;
				case "Service" :
					eval('document.getElementById("' + praefix + 'divSubMenuService").style.display = "none"');
					break;
				case "Kontakt" :
					eval('document.getElementById("' + praefix + 'divSubMenuKontakt").style.display = "none"');
					break;
				}			
			}
		else
			{
			eval('document.getElementById("' + praefix + 'divSubMenuFirmenprofil").style.display = "none"');
			eval('document.getElementById("' + praefix + 'divSubMenuAuslandspraktikum").style.display = "none"');
			eval('document.getElementById("' + praefix + 'divSubMenuService").style.display = "none"');
			eval('document.getElementById("' + praefix + 'divSubMenuKontakt").style.display = "none"');
			}
		}
	}