function mymenu ($nm, $type_menu, $over) 
{
	switch ($type_menu)
	{
	case 'menu' :
		if ($over==1) 
			{
				document.getElementById($nm).over_it=1;
				document.getElementById("sub_"+$nm).style.display='block'; 
			}	
		if ($over==0) 
			{
				document.getElementById($nm).over_it=0;				
				setTimeout("if(document.getElementById("+"'"+"sub_"+$nm+"'"+").over_it!=1)document.getElementById("+"'"+"sub_"+$nm+"'"+").style.display='none'",50);
			}
	break;

	case 'sub_menu' :	
		if ($over==1) {document.getElementById('sub_'+$nm).over_it=1;}
		if ($over==0) 
		{
			document.getElementById("sub_"+$nm).over_it=0;
			setTimeout("if(document.getElementById("+"'"+$nm+"'"+").over_it==0&&document.getElementById("+"'"+"sub_"+$nm+"'"+").over_it==0)document.getElementById("+"'"+"sub_"+$nm+"'"+").style.display='none'",50);
		}
	break;

	}

}
	





var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		menu_1a = newImage('img/menu_1a.gif');
		menu_2a = newImage('img/menu_2a.gif');
		menu_3a = newImage('img/menu_3a.gif');
		menu_4a = newImage('img/menu_4a.gif');
		menu_5a = newImage('img/menu_5a.gif');
		menu_6a = newImage('img/menu_6a.gif');
		menu_7a = newImage('img/menu_7a.gif');
		menu_8a = newImage('img/menu_8a.gif');
		preloadFlag = true;
	}
}





function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
function changeImagesArray(array) {
	if (preloadFlag == true) {
		var d = document; var img;
		for (var i=0; i<array.length; i+=2) {
			img = null; var n = array[i];
			if (d.images) {img = d.images[n];}
			if (!img && d.getElementById) {img = d.getElementById(n);}
			if (img) {img.src = array[i+1];}
		}
	}
}
function changeImages() {
	changeImagesArray(changeImages.arguments);
}