var menu_gifs = new Array();
var sel_menu_gifs = new Array();

function check_resolution_onload()

{

  if ((screen.height < 600) &&  (screen.width < 800))
  {
    alert("This web site is best viewed at a resolution of 800x600 or greater");
  }
}



function mouseOver_menu(objectID)

{
switch (objectID)
{  
 case "but1":
  {
    if (visibleTable == 1)
    {
         document.images['but1'].src="../../images/sel_02_03.gif";
    }
    else
    {
         document.images['but1'].src="../../images/over_02_03.gif";
    };
  break;
 }
 case "but2":
 {
   if (visibleTable == 2)
   {
        document.images['but2'].src="../../images/sel_00_02.gif";
   }
   else
   {
        document.images['but2'].src="../../images/over_00_02.gif";
   };
 break;
 }
 case "but3":
 {
  if (visibleTable == 3)
   {
        document.images['but3'].src="../../images/sel_98_00.gif";
   }
   else
   {
        document.images['but3'].src="../../images/over_98_00.gif";
   };
 break;
 }
 case "but4":
 {
    if (visibleTable == 4)
   {
        document.images['but4'].src="../../images/sel_96_98.gif";
   }
   else
   {
        document.images['but4'].src="../../images/over_96_98.gif";
   };
 break;
 }
 case "but5":
 {
    if (visibleTable == 5)
   {
        document.images['but5'].src="../../images/sel_94_96.gif";
   }
   else
   {
        document.images['but5'].src="../../images/over_94_96.gif";
   };
 break;
 }
 case "but6":
 {
   if (visibleTable == 6)
   {
        document.images['but6'].src="../images/sel_92_94.gif";
   }
   else
   {
        document.images['but6'].src="../../images/over_92_94.gif";
   };
 break;
 }
 case "but7":
 {
    if (visibleTable == 7)
   {
        document.images['but7'].src="../../images/sel_91_92.gif";
   }
   else
   {
        document.images['but7'].src="../../images/over_91_92.gif";
   };
 break;
 }
 case "but8":
 {
   if (visibleTable == 8)
   {
        document.images['but8'].src="../../images/sel_89_91.gif";
   }
   else
   {
        document.images['but8'].src="../../images/over_89_91.gif";
   }; 
 break;
 }
 case "but9":
 {
   if (visibleTable == 9)
   {
        document.images['but9'].src="../../images/sel_87_89.gif";
   }
   else
   {
        document.images['but9'].src="../../images/over_87_89.gif";
   }; 
 break;
 }
 case "but10":
 {
   if (visibleTable == 10)
   {
        document.images['but10'].src="../../images/sel_85_87.gif";
   }
   else
   {
        document.images['but10'].src="../../images/over_85_87.gif";
   }; 
 break;
 }

 }
}

function mouseOut_employ_menu(objectID)

{
switch (objectID)
{ 
case "but1":
 {
  if (visibleTable == 1)
   {
        document.images['but1'].src="../../images/sel_02_03.gif";
   }
   else
   {
        document.images['but1'].src="../../images/out_02_03.gif";
   };
 break;
 }
 case "but2":
 {
  if (visibleTable == 2)
   {
        document.images['but2'].src="../../images/sel_00_02.gif";
   }
   else
   {
        document.images['but2'].src="../../images/out_00_02.gif";
   };
 break;
 }
 case "but3":
 {
  if (visibleTable == 3)
   {
        document.images['but3'].src="../../images/sel_98_00.gif";
   }
   else
   {
        document.images['but3'].src="../../images/out_98_00.gif";
   };
 break;
 }
 case "but4":
 {
    if (visibleTable == 4)
   {
        document.images['but4'].src="../../images/sel_96_98.gif";
   }
   else
   {
        document.images['but4'].src="../../images/out_96_98.gif";
   };
 break;
 }
 case "but5":
 {
   if (visibleTable == 5)
   {
        document.images['but5'].src="../../images/sel_94_96.gif";
   }
   else
   {
        document.images['but5'].src="../../images/out_94_96.gif";
   };
 break;
 }
 case "but6":
 {
   if (visibleTable == 6)
   {
        document.images['but6'].src="../../images/sel_92_94.gif";
   }
   else
   {
        document.images['but6'].src="../../images/out_92_94.gif";
   }; 
 break;
 }
 case "but7":
 {
   if (visibleTable == 7)
   {
        document.images['but7'].src="../../images/sel_91_92.gif";
   }
   else
   {
        document.images['but7'].src="../../images/out_91_92.gif";
   };
 break;
 }
 case "but8":
 {
   if (visibleTable == 8)
   {
        document.images['but8'].src="../../images/sel_89_91.gif";
   }
   else
   {
        document.images['but8'].src="../../images/out_89_91.gif";
   };  
 break;
 }
 case "but9":
 {
    if (visibleTable == 9)
   {
        document.images['but9'].src="../../images/sel_87_89.gif";
   }
   else
   {
        document.images['but9'].src="../../images/out_87_89.gif";
   }; 
 break;
 }
 case "but10":
 {
  if (visibleTable == 10)
   {
        document.images['but10'].src="../../images/sel_85_87.gif";
   }
   else
   {
        document.images['but10'].src="../../images/out_85_87.gif";
   }; 
 break;
 }

}
}

function global_out_menu()

{
document.images['but1'].src='../../images/out_02_03.gif';
document.images['but2'].src='../../images/out_00_02.gif'; 
document.images['but3'].src='../../images/out_98_00.gif'; 
document.images['but4'].src='../../images/out_96_98.gif'; 
document.images['but5'].src='../../images/out_94_96.gif'; 
document.images['but6'].src='../../images/out_92_94.gif'; 
document.images['but7'].src='../../images/out_91_92.gif'; 
document.images['but8'].src='../../images/out_89_91.gif'; 
document.images['but9'].src='../../images/out_87_89.gif'; 
document.images['but10'].src='../../images/out_85_87.gif'; 
}


function employ_menus_off()

{
  for (buttonNo=1;buttonNo<11;buttonNo++)
  {
    var xBD = findDOM(eval("'but" + buttonNo + "'"),1);
    xBD.left = '-2000';
  }
}


    

function employ_menus_on()

{
var startPos = 0;
var increment = 51;

  for (buttonNo=1;buttonNo<11;buttonNo++)
  {
    var xBD = findDOM(eval("'but" + buttonNo + "'"),1);
    xBD.left = startPos + (increment * buttonNo);
  }
   var xBD = findDOM('but11',1); 
   xBD.left = startPos + increment;
}

function initilise_onload()
{



employ_menus_on()
toggle_visibility('table_1')
}


function toggle_visibility(objectID)

{
//move all tables off screen

var xBrowserDOM = findDOM(objectID,1);


for (tableNo=1;tableNo<11;tableNo++)
 {
    var xBD = findDOM(eval("'table_" + tableNo + "'"),1);
    xBD.visibility = 'hidden';
 }

//move slected elements to on screen positions

 switch (objectID)
 {  
 case "table_1":
 		{
 		  xBrowserDOM.visibility = 'visible';  
 		  employ_menus_on();
                   global_out_menu()
                   document.images['but1'].src='../../images/sel_02_03.gif';              
 		  visibleTable=1;
                   break;
                } 
 case "table_2":
		{
		  xBrowserDOM.visibility = 'visible';  
		  employ_menus_on();
                  global_out_menu()
                  document.images['but2'].src='../../images/sel_00_02.gif';              
		  visibleTable=2;
                  break;
                } 
 case "table_3":
		{
	          xBrowserDOM.visibility = 'visible';
		  global_out_menu()
                  document.images['but3'].src='../../images/sel_98_00.gif';
                  visibleTable=3;
                  break;
                } 
 case "table_4":
		{
		  xBrowserDOM.visibility = 'visible';
		  global_out_menu()
                  document.images['but4'].src='../../images/sel_96_98.gif';
		  visibleTable=4;
                  break;
                } 
 case "table_5":
		{
		  xBrowserDOM.visibility = 'visible';
		  global_out_menu()
                  document.images['but5'].src='../../images/sel_94_96.gif';
		  visibleTable=5;
                  break;
                } 
 case "table_6":
		{
		  xBrowserDOM.visibility = 'visible';
		  global_out_menu()
                  document.images['but6'].src='../../images/sel_92_94.gif';
		  visibleTable=6;
                  break;
                } 
 case "table_7":
		{
		  xBrowserDOM.visibility = 'visible';
		  global_out_menu()
                  document.images['but7'].src='../../images/sel_91_92.gif';
		  visibleTable=7;
                  break;
                } 
 case "table_8":
		{
		  xBrowserDOM.visibility = 'visible';
		  global_out_menu()
                  document.images['but8'].src='../../images/sel_89_91.gif';
		  visibleTable=8;
                  break;
                } 
 case "table_9":
		{
		  xBrowserDOM.visibility = 'visible';
		  global_out_menu()
                  document.images['but9'].src='../../images/sel_87_89.gif';
		  visibleTable=9;
                  break;
                } 
 case "table_10":
		{
		  xBrowserDOM.visibility = 'visible';
		  global_out_menu()
                  document.images['but10'].src='../../images/sel_85_87.gif';
		  visibleTable=10;
                  break;
                } 

 }
}