// function for changing stylesheets using document.styleSheets
function setStyleSheet(theme) {
for ( i = 0; i < document.styleSheets.length; i++ ) {
  if ( document.styleSheets[i].title ) {
    document.styleSheets[i].disabled = true;
    if ( document.styleSheets[i].title == theme )
      document.styleSheets[i].disabled = false;
  }
}
}

function getObj(name)
{
  if (document.getElementById)
  {
  	this.obj = document.getElementById(name);
	this.style = document.getElementById(name).style;
  }
  else if (document.all)
  {
	this.obj = document.all[name];
	this.style = document.all[name].style;
  }
  else if (document.layers)
  {
   	this.obj = document.layers[name];
   	this.style = document.layers[name];
  }
}
function invi(id,flag) {
		var x = new getObj(id);
		x.style.visibility = flag;
		//alert(x.style.visibility);
	}