function checkall(el, name)
{
     var c = el.checked;
     var box = el.form.elements[name];
     if(!box) return;
     for(var i = 0; i < box.length; i++) box[i].checked = c;
}

function OpenContact(lang)
{
	var msg;
	properties ='toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=no,'
	+'copyhistory=no,scrollbars=1,width=490,height=450,screenX=200,screenY=3';
	msg=window.open('kontakt.php?lang=' + lang,'DisplayWindow',properties);
}

function errorMsg()
{
  alert("Netscape 6 or Mozilla is needed to install a sherlock plugin");
}

function addEngine(name,ext,cat,type)
{
 if ((typeof window.sidebar == "object") && (typeof window.sidebar.addSearchEngine == "function")) { 
     window.sidebar.addSearchEngine(
       "http://www.divelogs.de/"+name+".src",
       "http://www.divelogs.de/"+name+"."+ext, name, cat );
 } else {
   errorMsg(name,ext,cat);
 } 
}

function showBigPic(file)
{
	    if (file=='close') document.getElementById('bigpic').innerHTML = '';
	  	else document.getElementById('bigpic').innerHTML = '<span style=\'position: absolute; margin:5px; top: 5px; left: 0px; background-color: #D7E9F1;\'><a href=\"javascript:showBigPic(\'close\')\"><img src=\'img/close.png\' alt=\'close\' title=\'close\' style=\'border:none;\'></a></span><img src=' + file + ' alt=' + file + '>';    
} 

function activateUploadButton()
{
 	if (document.getElementById('copyrightowner').checked == true) document.getElementById('uploadbutton').disabled = false;
	 else 	document.getElementById('uploadbutton').disabled = true;
}