Simple Poly Line (to mouse)

[scriptless]

Okay this is an easy one, but for some reason I cannot get a line to draw to the players mouse from a given x/y of a npc.. Any suggestions here, i know its top left, top right, bottom right, and bottom left for the order of cords.. or am i wrong here?

PHP Code:

//#CLIENTSIDE
function onMouseDown() {
  with ( findImg( 4000)) {  
    polygon = {
      mousex, mousey,
      mousex-(2/16), mousey-(2/16),
      x, y,
      x-(2/16),y-(2/16)
    };
    layer = 3;
  }
} 


All I am trying to do is make a line draw from the npc to the mouse.. =/

It seems to be twisting, but i cant get the cords working right, grr !!