function changebgcolor(this_id,color1,color2)
{
  document.getElementById(this_id).style.color=color1;
  document.getElementById(this_id).style.background=color2; //supported by most browsers like Gecko browsers and the IE series
  document.getElementById(this_id).style.backgroundcolor=color2; //supported by most browsers
  document.getElementById(this_id).style.bgcolor=color2;//used by layers browsers
}

function changebgcolorimage(this_id,color1,img1)
{

  
  document.getElementById(this_id).style.color=color1;
  document.getElementById(this_id).style.backgroundImage='url('+img1+')'; 

}