/* check to ensure rollovers are supported in browser */
	if (document.images)
	{
	/* preload the images */	
	leftbutton1off = new Image();
	leftbutton1off.src = "pics/nbtn2_corporateoveriew.gif";
	leftbutton1on = new Image();
	leftbutton1on.src = "pics/nbtn2_corporateoveriew_o.gif";	
	
	leftbutton2off = new Image();
	leftbutton2off.src = "pics/nbtn2_services.gif";
	leftbutton2on = new Image();
	leftbutton2on.src = "pics/nbtn2_services_o.gif";	
	
	leftbutton3off = new Image();
	leftbutton3off.src = "pics/nbtn2_insight.gif";
	leftbutton3on = new Image();
	leftbutton3on.src = "pics/nbtn2_insight_o.gif";	
	
	leftbutton4off = new Image();
	leftbutton4off.src = "pics/nbtn2_opportunities.gif";
	leftbutton4on = new Image();
	leftbutton4on.src = "pics/nbtn2_opportunities_o.gif";	

	leftbutton5off = new Image();
	leftbutton5off.src = "pics/nbtn2_contact.gif";
	leftbutton5on = new Image();
	leftbutton5on.src = "pics/nbtn2_contact_o.gif";			
	
	
	leftbutton6off = new Image();
	leftbutton6off.src = "pics/nbtn2_home.gif";
	leftbutton6on = new Image();
	leftbutton6on.src = "pics/nbtn2_home_o.gif";	
	
	leftbutton7off = new Image();
	leftbutton7off.src = "pics/newbtn_client_login.gif";
	leftbutton7on = new Image();
	leftbutton7on.src = "pics/newbtn_client_login_o.gif";	
	

	leftbutton8off = new Image();
	leftbutton8off.src = "pics/n_btn_strategicaccounts.gif";
	leftbutton8on = new Image();
	leftbutton8on.src = "pics/n_btn_strategicaccounts_o.gif";	
	
	leftbutton9off = new Image();
	leftbutton9off.src = "pics/n_btn_territorysales.gif";
	leftbutton9on = new Image();
	leftbutton9on.src = "pics/n_btn_territorysales_o.gif";	
	
	leftbutton10off = new Image();
	leftbutton10off.src = "pics/n_btn_insidesales.gif";
	leftbutton10on = new Image();
	leftbutton10on.src = "pics/n_btn_insidesales_o.gif";		
	
	leftbutton11off = new Image();
	leftbutton11off.src = "pics/n_btn_accountmanagement.gif";
	leftbutton11on = new Image();
	leftbutton11on.src = "pics/n_btn_accountmanagement_o.gif";		
		
	leftbutton12off = new Image();
	leftbutton12off.src = "pics/n_btn_channelmanagement.gif";
	leftbutton12on = new Image();
	leftbutton12on.src = "pics/n_btn_channelmanagement_o.gif";		
		
	leftbutton13off = new Image();
	leftbutton13off.src = "pics/nbtn2_speakers.gif";
	leftbutton13on = new Image();
	leftbutton13on.src = "pics/nbtn2_speakers_o.gif";		
			
	}
	/* function to set image to on state */
	function On(imageName)
	{
	if (document.images)
	{
	document[imageName].src = eval(imageName+"on.src");
	}
	}
	/* function to reset image back to off state */
	function Off(imageName)
	{
	if (document.images)
	{
	document[imageName].src = eval(imageName+"off.src");
	}
	}