glViewPort

Hi I am trying to create a viewport in a window (which will be slighly smaller in x and y than the window. When my project starts it seems to create the viewport but then switches to the default viewport (entire window) shortly after. Also, all my callbacks are in the init() function. Any ideas?

 //Create 2D Map Window
    glutInitWindowSize(300, 300);        
    glutInitWindowPosition(610,1);     
    windowMap = glutCreateWindow("2D Map Window");       
    init();    
    glViewport(50, 50, 249, 249);  
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho(worldxBegin,worldxEnd,worldyBegin,worldyEnd,10,-10);
    glMatrixMode(GL_MODELVIEW);   
    glutDisplayFunc(displayA);

Here is my display function:

//Function that creates 2D Map
void displayMap()
{     
     glutSetWindow(windowMap);
     glClearColor(wc1, wc2, wc3, 0.0);      //Set ground color
     glClear(GL_COLOR_BUFFER_BIT);      
     drawObjects();                         //Draw objects   
     //Draw white arrow
     glPushAttrib(GL_ALL_ATTRIB_BITS);                                                                      
     glPushMatrix();     
       glColor3f(1,1,1);      
       glTranslatef(-Aposx,-Aposy,0);                  
       glRotatef((-1)*arrowAngle,0,0,1);      
       glTranslatef(Aposx,Aposy,0);
       Aposx = (Aposx + ox);
       Aposy = (Aposy + oy);
       glTranslatef(-Aposx,-Aposy,0);         
       draw_arrow();     
     glPopAttrib();                      
     glPopMatrix(); 

     glutSwapBuffers();
     glutSetWindow(window3D);     //Set active window back to 3D
}