function navigationBtn()
       {
       String.prototype.contains = function(t) { return this.indexOf(t) >= 0 ? true : false }


        var sPath = window.location.pathname;
		var sMyVar = new String (sPath);
		//alert(sMyVar.contains('Buy'));

        var sPage = sPath.substring(sPath.lastIndexOf('/') + 1);
        sPage = sPage.replace('.aspx','');
        if(sMyVar.contains('Default') & !sMyVar.contains('Download') & !sMyVar.contains('Buy'))
        {
			document.getElementById('Home').className = 'active';
			document.getElementById('Screenshots').className = '';
			document.getElementById('Download').className = '';
			document.getElementById('Support').className = '';
			document.getElementById('FAQ').className = '';
        }
        if(sMyVar.contains('Screenshots'))
        {
			document.getElementById('Screenshots').className = 'active';
			document.getElementById('Home').className = '';
			document.getElementById('Download').className = '';
			document.getElementById('Support').className = '';
			document.getElementById('FAQ').className = '';
        }
        if(sMyVar.contains('Download'))
        {
			document.getElementById('Screenshots').className = '';
			document.getElementById('Home').className = '';
			document.getElementById('Download').className = 'active';
			document.getElementById('Support').className = '';
			document.getElementById('FAQ').className = '';
        }
        if(sMyVar.contains('Support'))
        {
			document.getElementById('Screenshots').className = '';
			document.getElementById('Home').className = '';
			document.getElementById('Download').className = '';
			document.getElementById('Support').className = 'active';
			document.getElementById('FAQ').className = '';
        }
        if(sMyVar.contains('FAQ'))
        {
			document.getElementById('Screenshots').className = '';
			document.getElementById('Home').className = '';
			document.getElementById('Download').className = '';
			document.getElementById('Support').className = '';
			document.getElementById('FAQ').className = 'active';
        }
        
       }