var ids=new Array('a1','a2','a3');   
    
        function switchid(id)
    {

   //var idValue=id;
   //alert(id)
        if(id=='a1')
        {
         document.getElementById('a1').style.display='block';
         document.getElementById('a2').style.display='none';
		 document.getElementById('a3').style.display='none';
        
         
                        /* Mozilla */
          document.getElementById('main1').setAttribute('class','hide1');
         document.getElementById('main2').setAttribute('class','show2');
        document.getElementById('main3').setAttribute('class','show3');
          
          
                       /* IE */
         document.getElementById('main1').setAttribute('className','hide1');
         document.getElementById('main2').setAttribute('className','show2');
		 document.getElementById('main3').setAttribute('className','show3');                   
				   
          
         
        }
        else if(id=='a2')
        {
         document.getElementById('a1').style.display='none';
         document.getElementById('a2').style.display='block';
		 document.getElementById('a3').style.display='none';
       
         
                        /* Mozilla */
          document.getElementById('main1').setAttribute('class','show1');
         document.getElementById('main2').setAttribute('class','hide2');
       document.getElementById('main3').setAttribute('class','show3');
          
                        /* IE */
          document.getElementById('main1').setAttribute('className','show1');
         document.getElementById('main2').setAttribute('className','hide2');
        document.getElementById('main3').setAttribute('className','show3');
         
        
            
        }
		 else if(id=='a3')
        {
         document.getElementById('a1').style.display='none';
         document.getElementById('a2').style.display='none';
		 document.getElementById('a3').style.display='block';
       
         
                        /* Mozilla */
        	document.getElementById('main1').setAttribute('class','show1');
     	 	document.getElementById('main2').setAttribute('class','show2');
      	 	document.getElementById('main3').setAttribute('class','hide3');
          
                        /* IE */
          document.getElementById('main1').setAttribute('className','show1');
         document.getElementById('main2').setAttribute('className','show2');
        document.getElementById('main3').setAttribute('className','hide3');
         
        
            
        }
       
       
        
	
}