if(document.images) {    
	var AboutN = new Image();
        AboutN.src = "Images/btn_aboutus.gif";
        var AboutA = new Image();
        AboutA.src = "Images/btn_aboutus_over.gif";
		
	var PortfolioN = new Image();
        PortfolioN.src = ImageURL + "/btn_portfolio.gif";
        var PortfolioA = new Image();
        PortfolioA.src = ImageURL + "/btn_portfolio_over.gif";
        
    var PublicationsN = new Image();
        PublicationsN.src = ImageURL + "/btn_publications.gif";
        var PublicationsA = new Image();
        PublicationsA.src = ImageURL + "/btn_publications_over.gif";    
		
	  var InspirationsN = new Image();
        InspirationsN.src = ImageURL + "/btn_inspirations.gif";
        var InspirationsA = new Image();
        InspirationsA.src = ImageURL + "/btn_inspirations_over.gif"; 
     
      var HomeN = new Image();
        HomeN.src = "Images/btn_home.gif";
        var HomeA = new Image();
        HomeA.src = "Images/btn_home_over.gif";
        
     var CareersN = new Image();
        CareersN.src = ImageURL + "/btn_careers.gif";
        var CareersA = new Image();
        CareersA.src = ImageURL + "/btn_careers_over.gif";
    
	 var ContactUsN = new Image();
        ContactUsN.src = ImageURL + "/btn_contactus.gif";
        var ContactUsA = new Image();
        ContactUsA.src = ImageURL + "/btn_contactus_over.gif";
        
     var PortfolioN = new Image();
		PortfolioN.src = ImageURL + "/btn_portfolio.gif";
		var PortfolioA = new Image();
		PortfolioA.src = ImageURL + "/btn_portfolio_over.gif";
        
    var PublicationsN = new Image();
		PublicationsN.src = ImageURL + "/btn_Publications.gif";
		var PublicationsA = new Image();
		PublicationsA.src = ImageURL + "/btn_Publications_over.gif";
		
		var InspirationsN = new Image();
		InspirationsN.src = ImageURL + "/btn_Inspirations.gif";
		var InspirationsA = new Image();
		InspirationsA.src = ImageURL + "/btn_Inspirations_over.gif";
    }

	function act(imgName) {
		if(document.images) document[imgName].src = eval(imgName + 'A.src')
		
	}

	function inact(imgName) {
		if(document.images) document[imgName].src = eval(imgName + 'N.src')
	}