/* Rotate only landscape or portrait pages in the document */

// Modify nStart, nEnd and nRotate to change script logic

nStart = 0; // first page to rotate
nEnd = this.numPages - 1; // last page to rotate
nRotate = 0; // allowed rotations: 0, 90, 180, 270
bLanscape = true; // set to false to process only Portrait pages

try {

    for (var i = nStart; i <= nEnd; i++)
       {
       // check if this page is landscape or portrait
       var aRect = this.getPageBox("Media",i);
       var Width = aRect[2] - aRect[0];
       var Height = aRect[1] - aRect[3];
       if (Height > Width) { // portrait
	if (!bLandscape) {
	     this.setPageRotations(i,i,nRotate)
	     }
	}
       else { // landscape
	if (bLandscape) {
   	     this.setPageRotations(i,i,nRotate)
	   }
                }
       }
} 
catch(e)
{
app.alert("Processing error: "+e)
}