var main_menu_left = 0;

function getElementPosition(elem)
{	
    var w = elem.offsetWidth;
    var h = elem.offsetHeight;
	
    var l = 0;
    var t = 0;
	
    while (elem)
    {
        l += elem.offsetLeft;
        t += elem.offsetTop;
        elem = elem.offsetParent;
    }

    return {"left":l, "top":t, "width": w, "height":h};
}

jQuery(document).ready(function(){
	var tmp = getElementPosition(jQuery('.main_menu')[0]);
	main_menu_left = tmp.left;
	jQuery('.menu_id').hover(
		function(){
			var tmp = getElementPosition(this);
			var l = tmp.left - main_menu_left - 10;
			jQuery('.menu_pointer').animate({'left': l+'px'}, 100);
		},
		function(){
		
		}
	);
});

function check_contact_form(form){
	if (form['form_data[sex]'].value=='' ||
		form['form_data[vorname]'].value=='' ||
		form['form_data[name]'].value=='' ||
		form['form_data[email]'].value==''
	){
		alert('Das Feld ist ein Pflichtfeld und muss ausgefüllt werden.');
		return false;
	}
	return true;
}