function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}


 function light(cobj)   
  {   
          for(var i=0;i<cobj.parentElement.cells.length;i++)   
                  cobj.parentElement.cells[i].style.backgroundImage='';   
          cobj.style.backgroundImage='url(../images/m_on.jpg)'; 
		  cobj.style.color='#ffffff'; 
		  cobj.style.backgroundPosition='center 50%'
		  
  }
  
  function lightIndex(cobj)   
  {   
          for(var i=0;i<cobj.parentElement.cells.length;i++)   
                  cobj.parentElement.cells[i].style.backgroundImage='';   
          cobj.style.backgroundImage='url(images/m_on.jpg)'; 
		  cobj.style.color='#ffffff'; 
		  cobj.style.backgroundPosition='center 50%'
		  
  }