function check_search(form)
{	
	if ((form.keyword.value == "") || (form.keyword.value == "Suchbegriff..."))
	{
		alert("Geben Sie einen Suchbegriff ein!");
		return false;
		
		if (form.keyword.value.length <= 3)
		{
			alert("Geben Sie einen laengeren Suchbegriff ein!");
			return false;
		}	
		
	} else {
		
		return true;
	}
}

function show_hide(id) 
{
    if(document.getElementById(id).style.display == 'none') 
	{
        document.getElementById(id).style.display = 'inline';
		
    } else {
	
        document.getElementById(id).style.display = 'none';
    }

}

function addText(elname, wrap1, wrap2) 
{
	if (document.selection) 
	{
		var str = document.selection.createRange().text;
		document.forms['inputform'].elements[elname].focus();
		var sel = document.selection.createRange();
		sel.text = wrap1 + str + wrap2;
		
		return;
		
	} else if ((typeof document.forms['inputform'].elements[elname].selectionStart) != 'undefined') {
	
		var txtarea = document.forms['inputform'].elements[elname];
		var selLength = txtarea.textLength;
		var selStart = txtarea.selectionStart;
		var selEnd = txtarea.selectionEnd;
		var oldScrollTop = txtarea.scrollTop;
		var s1 = (txtarea.value).substring(0,selStart);
		var s2 = (txtarea.value).substring(selStart, selEnd)
		var s3 = (txtarea.value).substring(selEnd, selLength);
		txtarea.value = s1 + wrap1 + s2 + wrap2 + s3;
		txtarea.selectionStart = s1.length;
		txtarea.selectionEnd = s1.length + s2.length + wrap1.length + wrap2.length;
		txtarea.scrollTop = oldScrollTop;
		txtarea.focus();
		
		return;
		
	} else {
	
		insertText(elname, wrap1 + wrap2);
	}
}

function insertText(elname, what) 
{
	if (document.forms['inputform'].elements[elname].createTextRange) 
	{
		document.forms['inputform'].elements[elname].focus();
		document.selection.createRange().duplicate().text = what;
		
	} else if ((typeof document.forms['inputform'].elements[elname].selectionStart) != 'undefined') {
	
		var tarea = document.forms['inputform'].elements[elname];
		var selEnd = tarea.selectionEnd;
		var txtLen = tarea.value.length;
		var txtbefore = tarea.value.substring(0,selEnd);
		var txtafter =  tarea.value.substring(selEnd, txtLen);
		var oldScrollTop = tarea.scrollTop;
		tarea.value = txtbefore + what + txtafter;
		tarea.selectionStart = txtbefore.length + what.length;
		tarea.selectionEnd = txtbefore.length + what.length;
		tarea.scrollTop = oldScrollTop;
		tarea.focus();
		
	} else {
	
		document.forms['inputform'].elements[elname].value += what;
		document.forms['inputform'].elements[elname].focus();
	}
}

function spoil(me) 
{
	if (me.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '')
	{
		me.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';
		me.innerText = '';
		me.value = 'Hide';
		
	} else {
	
		me.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none';
		me.value = 'Show';
	}
}

function add_searchplugin() 
{ 
	if(window.external&&("AddSearchProvider" in window.external))
	{
		window.external.AddSearchProvider(WWW_STATIC + "download/opensearch.xml");
	
	} else { 
		
		alert("Diese Funktion wird von ihrem Browser leider nicht unterstuetzt.");
	}
}