function subMenu(){
		var menuNodes = $('nav').childNodes;
		var menuButtons = new Array();
		for(var i=0; i<menuNodes.length; i++){
				if(menuNodes[i].tagName=='LI'){
						menuButtons.push(menuNodes[i]);
					}
			}

		//==========sub block width=========
		for(var i=0; i<menuButtons.length; i++){
				var subNodes = menuButtons[i].getElementsByTagName('UL');
				for(var j=0; j<subNodes.length; j++){
					if(menuButtons[i].offsetWidth < 123){  // sub block min-width
						subNodes[j].style.width = '123px';
					 }
					 else {subNodes[j].style.width = menuButtons[i].offsetWidth+'px'} // sub block width = button width
				}
			}

		//=========sub menu corners========
		if(navigator.userAgent.indexOf('MSIE 6')!=-1){
				var ie_flag = 1;
				var ie_fix = '<iframe></iframe>';
			}
			else{var ie_fix=''}
		var subBefore = '<li class="corners-top">' + ie_fix + '&nbsp;</li>';
		var subAfter = '<li class="corners-bot"><div><div>&nbsp;</div></div></li>';
		for(var i=0; i<menuButtons.length; i++){
				var subMenu = menuButtons[i].getElementsByTagName('UL');
				for(var j=0; j<subMenu.length; j++){
					subMenu[j].innerHTML = subBefore + subMenu[j].innerHTML + subAfter;
					if(ie_flag == 1){
						 subMenu[j].getElementsByTagName('iframe')[0].style.height = (subMenu[j].offsetHeight)-7;
					 }
				  }
			}
		var links = $('nav').getElementsByTagName('A');
		for(var i=0; i<links.length; i++){
				links[i].href = unescape(links[i].href);
			}
	}

setTimeout('subMenu()', 500);

function show(divid) {
d=document;
d.getElementById("cat1").style.display="none";
d.getElementById("cat2").style.display="none";

d.getElementById(divid).style.display="inline";