function chk_lapozo(f,pre,max){
		ugras = eval('f.'+pre+'_ugras').value;
		if(eval('f.'+pre+'_tetel')) tetel = eval('f.'+pre+'_tetel').value;
		else tetel = 20;
		if(eval('f.'+pre+'_tetel')) new_tetel = eval('f.'+pre+'_new_tetel').value;
		else new_tetel = tetel;
		if(ugras > 0 && ugras % 1 == 0 && ugras <= max) return true;
		else if(tetel == new_tetel){
			alert('Hibás oldalszámot adott meg');
			return false;
		}return true;
	}	

	function textarea_max(ta,max){
		if(ta.value.length > max)
			ta.value = ta.value.substr(0,max);
	}

	function hidDiv(DN){
		e = document.getElementById(DN);
		e.style.display='none';
	}

	function DivDrag(DN,e){
		obj = document.getElementById(DN);
		ob=obj;
		var l=obj.style.left;
		l=l.substr(0,l.length-2)*1;
		var t=obj.style.top;
		t=t.substr(0,t.length-2)*1;
		x = nn6 ? e.clientX-l : event.clientX-l;
		y = nn6 ? e.clientY-t : event.clientY-t;
		document.onmousemove=DivMove;
	}

	function DivMove(e){
		if(ob){
			ob.style.left = nn6 ? (e.clientX-x)+'px' : event.clientX-x;
			ob.style.top = nn6 ? (e.clientY-y)+'px' : event.clientY-y;
			window.status=ob.style.left+" - "+(nn6 ? e.clientX-x : event.clientX-x);
		}
	}

	document.onmouseup=new Function("ob=x=y=0");