function center(element) {
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  } else {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.offsetWidth
    myHeight = document.documentElement.offsetHeight
	}	
  //window.alert( 'Width = ' + myWidth );
  //window.alert( 'Height = ' + myHeight );
  if (myWidth > 960) {
  	document.getElementById(element).style.left=(myWidth-960)/2;
  }
  else {
  	document.getElementById(element).style.left=0;
  }
}