var win = null;
var kalenderPopup = null;

function vis_kalender(form, felt)
{
	kalenderPopup = window.open("/kalender_popup.php", "CtrlWindow", "status=no,toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=no,width=400,height=200")
	datoFelt = eval("document." + form + "." + felt);
}

function popup(fil)
{
	if(win != null){
		win.close();
	}

	win = window.open("/hjelp/" + fil,"CtrlWindow","scrollbars,width=600,height=400");
}

function highlight(elem){
	elem.style.background = '#e6e6e6';
}

function un_highlight(elem){
	elem.style.background = '';
}

function fyll_grad_select(elem, grader, curr){
	elem.length = 0;
	for(i = 0;i < grader.length;i++){
		elem.options[i] = new Option(grader[i],grader[i]);
		if(grader[i] == curr){
			elem.options[i].selected = true;
		}
	}
}

function toggleVisFelt(name, id){
	var block = document.getElementById(name + '_block_' + id);

	if(block.innerHTML == '+'){
		block.innerHTML = '-';
	} else{
		block.innerHTML = '+';
	}

	if(document.getElementById(name + '_elem_' + id).style.display == ''){
		document.getElementById(name + '_elem_' + id).style.display = 'none';
	} else{
		document.getElementById(name + '_elem_' + id).style.display = '';
	}
}