function Browser() 
{                                         
          this.dom = document.getElementById?1:0;
          this.ie4 = (document.all && !this.dom)?1:0;
          this.ns4 = (document.layers && !this.dom)?1:0;
          this.ns6 = (this.dom && !document.all)?1:0;
          this.ie5 = (this.dom && document.all)?1:0;
          this.ok = this.dom || this.ie4 || this.ns4;
          this.platform = navigator.platform;

          this.ie = (this.ie5) ? 1 : 0;
          this.ns = (this.ns6 || this.name=="Netscape") ? 1 : 0;
          this.opera = (window.opera)?1:0;

          this.name = navigator.appName;
          this.version = parseFloat(navigator.appVersion);
          if (!this.opera && this.name == "Microsoft Internet Explorer" && navigator.userAgent.indexOf("MSIE 6.0") != -1)
          {
                  this.version = 6;
          }
          else if (!this.opera && this.name == "Microsoft Internet Explorer" && navigator.userAgent.indexOf("MSIE 5.5") != -1)
          {
                  this.version = 5.5;
          }
	  else if (this.opera && navigator.userAgent.indexOf("Opera 7") != -1)
          {
                  this.version = 7;
          }
          else if (this.opera && navigator.userAgent.indexOf("Opera/6") != -1)
          {
                  this.version = 6;
          }

          this.ie6 = (this.ie && this.version > 5) ? true : false;
          this.png = (this.ie6 || this.opera) ? true : false;
}
// ..................................................................

function displayLayer(obj_name)
{
	obj = findObj(obj_name);
	obj_link = findObj(obj_name+"_link");

	if (obj && obj.style.display == "none")
	{
		obj.style.display = "block";
		if (obj_link)
		{
			obj_link.className = obj_link.className.replace("blue", "gray");
		}
	}
	else if (obj)
	{
		obj.style.display = "none";
		if (obj_link)
		{
			obj_link.className = obj_link.className.replace("gray", "blue");
		}
	}
}

// ..................................................................

function set_active(id)
{
var browser = new Browser();
var version = parseInt(browser.version);
	if (browser.opera) { document.location.href="?tab="+id; return; }

	if(id==2)
	{
	
	
	obj1=document.getElementById('block1');
	obj1d=document.getElementById('block1d');
	obj1.className ='pic1';	obj1d.className ='tpic1d';
	
	obj1t=document.getElementById('block1t');
	obj1tA=document.getElementById('block1tA');
	obj1tA.style.display="none";	obj1t.style.display="";
	
	
	obj2=document.getElementById('block2');
	obj2d=document.getElementById('block2d');
	obj2.className ='pic2A';	obj2d.className ='tpic2dA';
	
	obj2t=document.getElementById('block2t');
	obj2tA=document.getElementById('block2tA');
	obj2tA.style.display="";	obj2t.style.display="none";
	
	
	obj3=document.getElementById('block3');
	obj3d=document.getElementById('block3d');
	obj3.className ='pic3';	obj3d.className ='tpic3d';
	
	obj3t=document.getElementById('block3t');
	obj3tA=document.getElementById('block3tA');
	obj3tA.style.display="none";	obj3t.style.display="";

	}else
	
	if(id==1)
	{
		
	obj1=document.getElementById('block1');
	obj1d=document.getElementById('block1d');
	obj1.className ='pic1A';	obj1d.className ='tpic1dA';

	obj1t=document.getElementById('block1t');
	obj1tA=document.getElementById('block1tA');
	obj1tA.style.display="";	obj1t.style.display="none";


	obj2=document.getElementById('block2');
	obj2d=document.getElementById('block2d');
	obj2.className ='pic2';	obj2d.className ='tpic2d';

	obj2t=document.getElementById('block2t');
	obj2tA=document.getElementById('block2tA');
	obj2tA.style.display="none";	obj2t.style.display="";



	obj3=document.getElementById('block3');
	obj3d=document.getElementById('block3d');
	obj3.className ='pic3';	obj3d.className ='tpic3d';
	
	obj3t=document.getElementById('block3t');
	obj3tA=document.getElementById('block3tA');
	obj3tA.style.display="none";	obj3t.style.display="";

	}

	else
	
	if(id==3)
	{
		
	obj1=document.getElementById('block1');
	obj1d=document.getElementById('block1d');
	obj1.className ='pic1';	obj1d.className ='tpic1d';
		
	obj1t=document.getElementById('block1t');
	obj1tA=document.getElementById('block1tA');
	obj1tA.style.display="none";	obj1t.style.display="";
	
	
	
	obj2=document.getElementById('block2');
	obj2d=document.getElementById('block2d');
	obj2.className ='pic2';	obj2d.className ='tpic2d';
	obj2t=document.getElementById('block2t');
	obj2tA=document.getElementById('block2tA');
	obj2tA.style.display="none";	obj2t.style.display="";


	
	obj3=document.getElementById('block3');
	obj3d=document.getElementById('block3d');
	obj3.className ='pic3A';	obj3d.className ='tpic3dA';
	
	obj3t=document.getElementById('block3t');
	obj3tA=document.getElementById('block3tA');
	obj3tA.style.display="";	obj3t.style.display="none";

	}
	
	
}