function menuClick(id,isProduct) {
	
	if (!document.getElementById(id)) resetMenu();
	
	var display_element = false;
	if (document.getElementById(id).style.display == 'none' || isProduct == 1) {
		display_element = true;
	}
	
	resetMenu();
	
	if (display_element == false) {
		document.getElementById(id).style.display = 'none';
	} else {
		document.getElementById(id).style.display = '';
	}
	
}

function resetMenu() {

	var children = document.getElementById('menu_div').getElementsByTagName('*');
	
	for (i=0;children[i]!=undefined;i++)
	{
		if ( children[i].id != '' && children[i].nodeType == 1 )
		{
			children[i].style.display='none';
		}
	}
	
}

function next_pic() {
	
	if (img_nr<img_cnt) {
		next_nr = img_nr + 1;
	} else {
		next_nr = 1;
	}
	
	document.getElementById('img_container').src=window['prodimg_'+next_nr].src;
	img_nr = next_nr;
	
}

function prev_pic() {
	
	if (img_nr>1) {
		prev_nr = img_nr - 1;
	} else {
		prev_nr = img_cnt;
	}
	
	document.getElementById('img_container').src=window['prodimg_'+prev_nr].src;
	img_nr = prev_nr;
}