function show(num)
{	
	var tits = document.getElementById('business').getElementsByTagName('h3');
	for(i=0;i<tits.length;i++)
	{
		tits[i].className = '';
		document.getElementById('con'+(i+1)).style.display = 'none';
	}
	document.getElementById('tit'+num).className = 'active';
	document.getElementById('con'+num).style.display = '';

}

window.onload = function()
{
	var tds = document.getElementById("nav").getElementsByTagName("td");
	for(var i=0; i<tds.length; i++){
		tds[i].onmouseover=function(){
			if(this.getElementsByTagName('div')[0]){
				this.getElementsByTagName('div')[0].style.position = 'relative';	
				this.className+=(this.className.length>0?" ":"") + "show";
				this.getElementsByTagName('ul')[0].style.width = this.getElementsByTagName('div')[0].offsetWidth - 1 + 'px';
			}
			
		}
		tds[i].onmouseout=function(){
			this.className=this.className.replace(new RegExp("( ?|^)show\\b"), "");
		}
	}	
}