function showlayer(szDivID, iState) 
{
    if(document.layers)	   
    {
    	alert(document.layers[szDivID].visibility);
    	if(document.layers[szDivID].visibility == "show")
    	{
	   	       document.layers[szDivID].visibility = "hide";
    	}
    	else
    	{
    	       document.layers[szDivID].visibility = "show";
    	}
    }
    else if(document.getElementById)	  
    {
        var obj = document.getElementById(szDivID);
        if (obj.style.visibility == "visible")
        {
        	obj.style.visibility = "hidden"; 
        }
        else
        {
  			obj.style.visibility = "visible";      
        }
    }
    else if(document.all)	
    {
    	alert(document.all[szDivID].style.visibility);

		if (document.all[szDivID].style.visibility == "visible")
		{
	        document.all[szDivID].style.visibility = "hidden";		
		}
		else
		{
	        document.all[szDivID].style.visibility = "visible";		
		}
    }
}

function hidelayer(szDivID, iState) 
{
    if(document.layers)	   
    {
	    document.layers[szDivID].visibility = iState ? "show" : "hide";
    }
    else if(document.getElementById)	  
    {
        var obj = document.getElementById(szDivID);
        obj.style.visibility = iState ? "visible" : "hidden";
    }
    else if(document.all)	
    {
        document.all[szDivID].style.visibility = iState ? "visible" : "hidden";
    }
}