function mOver(a) {
	document.getElementById('nav' + a).src='images/nav/' + a + '_a.gif';	
}
function mOut(a) {
	document.getElementById('nav' + a).src='images/nav/' + a + '.gif';
}

var b=0;

function showTaf(a) {
	document.getElementById('snavt').src='images/space.gif';
	if(a == 'tellafriend'){
	document.getElementById('nav8').src='images/nav/8_a.gif';
	document.getElementById('tellafriend').style.display='inline';
	}else if(a == 'newsletter'){
	document.getElementById('nav10').src='images/nav/10_a.gif';
	document.getElementById('newsletter').style.display='inline';
	}
	b=1;
}

function hideTaf() {
	b=0;
	document.getElementById('tellafriend').style.display='none';
	document.getElementById('newsletter').style.display='none';
	document.getElementById('nav8').src='images/nav/8.gif';	
	document.getElementById('nav10').src='images/nav/10.gif';
}

function mOverText(a) {
	document.getElementById('nav' + a).src='images/nav/' + a + '_a.gif';	
	document.getElementById('snavt').src='images/nav/' + a + '_text.gif';
}

function mOutText(a) {
	if (b==0) {
		document.getElementById('nav' + a).src='images/nav/' + a + '.gif';
	}
	document.getElementById('snavt').src='images/space.gif';
}


function myPopup(a,b,c,d) {
	window.open('popup.php?type='+ a +'&sum='+ b +'&project='+ c +'&picNr='+ d +'','pop','resizable=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,toolbar=0,width=640,height=400');
}

function printPopup(a,b,c,d,f) {
	window.open('print.php?pageID='+ a +'&sub=' + b + '&m=' + c +'&type=' + d + '&nr=' + f + '','pop1','resizable=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,toolbar=0,width=450,height=640');
}

function formcheck1()
{
	var mymail=document.form1.mymail.value, friendmail=document.form1.friendmail.value;
	var cmymail="",cfriendmail="";				
	if (mymail!=""){
		if (document.form1.mymail.value.indexOf('@',0)==-1 || document.form1.mymail.value.indexOf('.',0)==-1){
			cmymail="Die eingegebene E-Mail Adresse ist nicht korrekt!\n";
		}
	}else{
		var cmymail="Sie haben keine E-Mail Adresse angegeben!\n";
	}
	
	if (friendmail!="")
	{
		if (document.form1.friendmail.value.indexOf('@',0)==-1 || document.form1.friendmail.value.indexOf('.',0)==-1){
			cfriendmail="Die eingegebene E-Mail Adresse des Freundes ist nicht korrekt!\n";
		}
	}else{
		var cfriendmail="Sie haben die E-Mail Adresse des Freundes nicht angegeben!\n";
	}
	if (cmymail!="" || cfriendmail!="")
	{
		alert(cmymail+cfriendmail);
		return false;
	}else{
		return true;
	}
}

function formcheck2()
{
	var myname=document.form2.myname.value, mymail=document.form2.mymail.value;
	var cmyname="",cmymail="";				
	if (myname==""){		
		cmyname="Sie haben keinen Namen angegeben!\n";
	}	
	if (mymail!="")
	{
		if (document.form2.mymail.value.indexOf('@',0)==-1 || document.form2.mymail.value.indexOf('.',0)==-1){
			cmymail="Die eingegebene E-Mail Adresse ist nicht korrekt!\n";
		}
	}else{
		var cmymail="Sie haben keine E-Mail Adresse angegeben!\n";
	}
	if (cmyname!="" || cmymail!="")
	{
		alert(cmyname+cmymail);
		return false;
	}else{
		return true;
	}
}