function showSub ( nr ) {
	if( sub_visible != 0 ) {
		document.getElementById('nav'+sub_visible+'_b').style.display = "none";
	}
	if( nr != 0 ) {
		document.getElementById('nav'+nr+'_b').style.display = "block";
		document.getElementById('subout1').style.display = "block";
		document.getElementById('subout2').style.display = "block";
		
		
	} else {
		document.getElementById('subout1').style.display = "none";
		document.getElementById('subout2').style.display = "none";
	}
	sub_visible = nr;
}

function anwpop( id, stat ) {
	document.getElementById(id).style.display = stat ? 'block' : 'none';
}

function CheckForm(){
	if(document.form1.name.value == ''){
			alert("Bitte tragen Sie Ihren Namen ein");
			document.form1.name.focus();
			return(false);
	}
	if(document.form1.email.value == ''){
			alert("Bitte tragen Sie Ihre Email ein");
			document.form1.email.focus();
			return(false);
	}
	

	if(document.form1.email.value != ""){
		emailadr=document.form1.email.value;

			mailat=emailadr.indexOf("@"); 
			maildot=emailadr.indexOf(".");
			if ((mailat==-1)||(maildot==-1)){
				alert("Bitte berprfen Sie die Email-Adresse!");
				document.form1.email.focus();
				return(false);
			}
	}
	
	if(document.form1.nachricht.value == ''){
			alert("Sie haben keinen Text eingegeben!");
			document.form1.nachricht.focus();
			return(false);
	}
}

function showListe( nr, stat ) {
	if( openList > 0 ) {
		document.getElementById("show_"+openList).style.display = "block";
		document.getElementById("liste_"+openList).style.display = "none";
	}
	document.getElementById("show_"+nr).style.display = stat ? "none" : "block";
	document.getElementById("liste_"+nr).style.display = stat ? "block" : "none";
	openList = stat ? nr : 0;
}

function changeClass( id, name ) {
	document.getElementById(id).className = name;
}

function showAdr( pfad, nr, stat, gif ) {
	if( stat ) {
		if( vis > 0 ) {
			document.getElementById('adr_'+vis).style.display = "none";
			document.getElementById('ort_'+vis).src = pfad+"/material/vertr/"+gifvis+"_b.gif";
			if( document.getElementById('p_'+vis) ) {
				document.getElementById('p_'+vis).src = pfad+"/material/kk.gif";
			} else {
				document.getElementById('sq_'+vis).src = pfad+"/material/kb.gif";
			}
		}
		document.getElementById('adr_'+nr).style.display = "block";
		document.getElementById('ort_'+nr).src = pfad+"/material/vertr/"+gif+"_s.gif";
		if( document.getElementById('p_'+nr) ) {
			document.getElementById('p_'+nr).src = pfad+"/material/kks.gif";
		} else {
			document.getElementById('sq_'+nr).src = pfad+"/material/kbs.gif";
		}
		vis = nr;
		gifvis = gif;
	} 
}