var menuMap=new Array(
Array(/leads_detail.html/),
Array(/index.html/,/certificate.html/,/message.html/),
Array(/\/products\-*[0-9]*.html/,/products\/vlist/,/products\/info/),
Array(/selling_leads\-*[0-9]*.html/),
Array(/buying_leads.html/),
Array(/about_us.html/),
Array(/contact_us.html/),
Array(/link.html/,/link_products.html/,/link_buy.html/,/link_sell.html/)
);

function changeStyle(type){
	var custType=null;
	if(arguments.length==1){
		custType=parseInt(type,10);
		if(custType){
			choosePage(custType+2);
			return true;
		}
	}
	for(var counter=0;counter<menuMap.length;counter++){
		for(var i=0;i<menuMap[counter].length;i++){
			var ptn=menuMap[counter][i];
			if(ptn.test(window.location.href)){
				choosePage(counter);
				return true;
			}
		}
	}
	choosePage(1);
	return false;
}

function choosePage(num){
	var counter=1;
	while($("headMenuItem"+counter)){
		$("headMenuItem"+counter).className = "bt_nav_b";
		if(counter==num){
			$("headMenuItem"+counter).className = "bt_nav_a";
		}
		counter++;
	}
}