window.moveTo(0,0);
function adjustHeight(name) {
	var img = document.images[name];
	if (document.layers) {
		resize_window(img.y);
	}
	else {
		var canvas = new Canvas(0, 0, img.width, img.height);
		while (img){
			canvas.x += img.offsetLeft;
			canvas.y += img.offsetTop;
			img = img.offsetParent;
		}
		resize_window(canvas.x,canvas.y);
	}
}

function resize_window(width,height) {
	if(document.all) { // IE
		height=height+80;
	}
	else if(document.getElementById) { //Mozilla
		height=height+60;
	}
	width=width+40;
	if(screen.height < height) height=screen.height-100; // Falls groesser als Bildschrim, wieder verkleinern
	window.resizeTo(width,height); // width,height
}

function toggle_display(objID,status) {
	var objects=objID.split(",");
	for(i=0; i<objects.length; i++) {
		obj=get_object(objects[i]);
		obj.style.display = status;
	}
	adjustHeight('bottom');
}

function change_display(objID,status) {
	var objects=objID.split(",");
	for(i=0; i<objects.length; i++) {
		obj=get_object(objects[i]);
		obj.style.display = status;
	}
}

function toggle_visibility(objID,status) {
	var objects=objID.split(",");
	for(i=0; i<objects.length; i++) {
		obj=get_object(objects[i]);
		obj.style.visibility = status;
	}
}

function get_object(objID) {
	if(document.getElementById) obj=document.getElementById(objID);
	else if(document.all) obj=document.all(objID);
	if(obj) return obj;
	else return false;
}

function combine_fields(source,target) {
	var source_values='';
	var sources=source.split(",");
	for(i=0; i<sources.length; i++) {
		source_obj=get_object(sources[i]);
		source_values=source_values+source_obj.value;
	}
	target_obj=get_object(target);
	target_obj.value=source_values;
}

function change_style(objID,stylename) {
	obj=get_object(objID);
	obj.className=stylename;
}

function display_field(obj,equals,display_field) {
	if(obj.value==equals) {
		toggle_visibility(display_field,'visible');
	}
	else {
		display_field_id=get_object(display_field);
		display_field_id.value='';
		toggle_visibility(display_field,'hidden');
	}
}

function check_all_empty(fields,message) {
	var field=fields.split(",");
	var error=0;
	for(i=0; i<field.length; i++) {
		field_obj=get_object(field[i]);
		if(field_obj.value=="") error++;
	}
	if(error==field.length) {
		if(message!="")	alert(message);
		return true;
	}
	else return false;
}

function check_all_same_value(fields,val,message) {
	var field=fields.split(",");
	var error=0;
	for(i=0; i<field.length; i++) {
		field_obj=get_object(field[i]);
		if(field_obj.value==val) error++;
	}
	if(error==field.length) {
		if(message!="")	alert(message);
		return true;
	}
	else return false;
}

function check_all_checked(fields,message) {
	var field=fields.split(",");
	var error=0;
	for(i=0; i<field.length; i++) {
		field_obj=get_object(field[i]);
		if(field_obj.checked==false) error++;
	}
	if(error==field.length) {
		if(message!="")	alert(message);
		return true;
	}
	else return false;
}