function simplePreload()
	{ 
  		var args = simplePreload.arguments;
  		document.imageArray = new Array(args.length);
  		for(var i=0; i<args.length; i++)
  		{
    		document.imageArray[i] = new Image;
    		document.imageArray[i].src = args[i];
  		}
	}
		
	function changeMenuBg(menuItem) {
		document.getElementById("menuitem" + menuItem).style.background="url('images/menubga.gif')";
		document.getElementById("menuleft" + menuItem).style.background="url('images/menulefta.gif')";
		document.getElementById("menuright" + menuItem).style.background="url('images/menurighta.gif')";
	}
	function restoreMenuBg(menuItem) {
		document.getElementById("menuitem" + menuItem).style.background="url('images/menubg.gif')";
		document.getElementById("menuleft" + menuItem).style.background="url('images/menuleft.gif')";
		document.getElementById("menuright" + menuItem).style.background="url('images/menuright.gif')";
	}
	function init() {
	simplePreload('images/menubga.gif','images/menulefta.gif', 'images/menurighta.gif', 'images/arrow.gif');
	}
	
function searchForm(which) {
	document.getElementById('basic').style.display = 'none';	
	document.getElementById('advanced').style.display = 'none';
	document.getElementById(which).style.display = 'inline';
}