function getDimensions() 
{
  var myWidth = 0, myHeight = 0;
  var myDimensions=new oDimensions();
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else {
    if( document.documentElement &&
        ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
      //IE 6+ in 'standards compliant mode'
      myWidth = document.documentElement.clientWidth;
      myHeight = document.documentElement.clientHeight;
    } else {
      if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
        //IE 4 compatible
        myWidth = document.body.clientWidth;
        myHeight = document.body.clientHeight;
      }
    }
  }
  myDimensions.width=myWidth;
  myDimensions.height=myHeight;
  return myDimensions;
  
}

function oDimensions(width,height)
{
	this.width=width;
	this.height=height;
}

function setActiveStyleSheet(enable, disable) {
	for ( i = 0; i < document.styleSheets.length; i++ )	{
		document.styleSheets[i].title==enable?document.styleSheets[i].disabled=false:null;
		document.styleSheets[i].title==disable?document.styleSheets[i].disabled=true:null;
	}
}

function resizePage(_800, _1024)
{
	var myDimensions=getDimensions();
	var width=myDimensions.width;
	if (width < 1000){
		setActiveStyleSheet(_800, _1024); //enable disable
	} else if (width > 1000) {
		setActiveStyleSheet(_1024, _800); //enable disable
	}
}