function FP_swapImg() {//v1.0
 var doc=document,args=arguments,elm,n; doc.$imgSwaps=new Array(); for(n=2; n<args.length;
 n+=2) { elm=FP_getObjectByID(args[n]); if(elm) { doc.$imgSwaps[doc.$imgSwaps.length]=elm;
 elm.$src=elm.src; elm.src=args[n+1]; } }
}

function FP_preloadImgs() {//v1.0
 var d=document,a=arguments; if(!d.FP_imgs) d.FP_imgs=new Array();
 for(var i=0; i<a.length; i++) { d.FP_imgs[i]=new Image; d.FP_imgs[i].src=a[i]; }
}

function FP_getObjectByID(id,o) {//v1.0
 var c,el,els,f,m,n; if(!o)o=document; if(o.getElementById) el=o.getElementById(id);
 else if(o.layers) c=o.layers; else if(o.all) el=o.all[id]; if(el) return el;
 if(o.id==id || o.name==id) return o; if(o.childNodes) c=o.childNodes; if(c)
 for(n=0; n<c.length; n++) { el=FP_getObjectByID(id,c[n]); if(el) return el; }
 f=o.forms; if(f) for(n=0; n<f.length; n++) { els=f[n].elements;
 for(m=0; m<els.length; m++){ el=FP_getObjectByID(id,els[n]); if(el) return el; } }
 return null;
}
    function navi_onmouseover()
    {
        width = document.body.offsetWidth; 
        height = document.body.offsetHeight; 
        
        $("#mask").width(width);
        $("#mask").height(height);
        $("#mask").show();
        
        document.getElementById("navi").style.display="block";
    }
    
    function close_navigation()
    {
         $("#mask").hide(); 
    
        document.getElementById("navi").style.display='none';
    }
   
    $(function(){
        $("#mask").mouseover(function() {
            close_navigation();
        });
    });
   
    function About()
    {
        HideAll();
    }
    function Products()
    {
        HideAll();
        
        document.getElementById("dashed_1").style.display="block";
        document.getElementById("dashed_2").style.display="block";
        document.getElementById("product_1").style.display="block";
    }
    function Benefits()
    {
        HideAll();
        
        document.getElementById("dashed_1").style.display="block";
        document.getElementById("dashed_2").style.display="block";
        document.getElementById("benefits_1").style.display="block";
    }
    function Exercises()
    {
        HideAll();
        
        document.getElementById("dashed_1").style.display="block";
        document.getElementById("dashed_2").style.display="block";
        document.getElementById("exercises_1").style.display="block";
    }
    function Locations()
    {
        HideAll();
    }
    function News()
    {
        HideAll();
    }
    function Contact()
    {
        HideAll(); 
    }
    function HideAll()
    {
        document.getElementById("dashed_1").style.display="none";
        document.getElementById("dashed_2").style.display="none";
        document.getElementById("product_1").style.display="none";
        document.getElementById("benefits_1").style.display="none"; 
        document.getElementById("exercises_1").style.display="none";
        document.getElementById("product_13").style.display="none";
        document.getElementById("product_23").style.display="none";
        document.getElementById("product_33").style.display="none";
        document.getElementById("product_43").style.display="none";
        document.getElementById("benefits_13").style.display="none";
    }  
   
    function HideAllProducts()
    {
        document.getElementById("product_13").style.display='none';
        document.getElementById("product_23").style.display='none';
        document.getElementById("product_33").style.display='none';
        document.getElementById("product_43").style.display="none";
    } 

    function product_11_visible()
    {
        HideAllProducts(); 
        
        document.getElementById("product_13").style.display='block';
    }
    function product_12_visible()
    {
        HideAllProducts(); 
        
        document.getElementById("product_23").style.display='block';
    }
    function product_13_visible()
    {
        HideAllProducts(); 
        
        document.getElementById("product_33").style.display='block';
    }
    function product_14_visible()
    {
        HideAllProducts(); 
        
        document.getElementById("product_43").style.display='block';
    }
    
    function benefits_21_visible()
    {
        document.getElementById("benefits_13").style.display="none";
    }
    function benefits_22_visible()
    {
        document.getElementById("benefits_13").style.display="none";
    }
    function benefits_23_visible()
    {
        document.getElementById("benefits_13").style.display="none";
    }
    function benefits_24_visible()
    {
        document.getElementById("benefits_13").style.display="none";
    }
    function benefits_25_visible()
    {
        document.getElementById("benefits_13").style.display="none";
    }
    function benefits_26_visible()
    {
        document.getElementById("benefits_13").style.display="block";
    }