function tab_Clicked(tab_number){
         var current_url = location.href; 
         pos = current_url.search(/\?/);  
         if (pos != -1) {current_url = current_url.substring(0, pos);}         
         switch (tab_number){
            case 1: 
                location.href = current_url + "?tab=Overview";                
                break;
            case 2: 
                location.href = current_url + "?tab=PlanOfferings";                 
                break;
            case 3: 
                location.href = current_url + "?tab=FindAPlan";
                break;
            case 4: 
                location.href = current_url + "?tab=BeforeEnrollment";
                break;
            case 5: 
                location.href = current_url + "?tab=Enrollment";
                break;
            default : alert("Tab Undefined");
        }        
}


function format_tabs(tab_number){
    for(var tab_counter=1;tab_counter<=5;tab_counter++)
	{ 
        var tab_id ="tab_" + tab_counter;
        var tab_page_id ="tab_page_" + tab_counter;   
        if(tab_counter == tab_number){
            document.getElementById(tab_id).className="tab_Active";
            document.getElementById(tab_page_id).className="tabpage_Active"; 
            if(tab_number == 3){
                document.getElementById('FindaPlanOuterDiv').style.display="block";
            }
        }                
        else{
        document.getElementById(tab_id).className="tab_Inactive";
        document.getElementById(tab_page_id).className="tabpage_Inactive";
        }        
     } 
}

function Load_Tab(){
    var current_url = location.href; 
    pos = current_url.search(/\?/);  
    if (pos == -1) return;
    query_string = current_url.substring(pos+1); 
    params_array = query_string.split("&"); 
    for ( var index in params_array ){
    switch (params_array[index]){
        case "tab=Overview":
            format_tabs(1);
            break;
        case "tab=PlanOfferings":
            format_tabs(2);
            break;    
        case "tab=FindAPlan":
            format_tabs(3);
            break;
        case "tab=BeforeEnrollment":
            format_tabs(4);
            break;
        case "tab=Enrollment":
            format_tabs(5);
            break;
        default: alert("Undefined tab");
    }
    } 
                  

}