scaling an image problem

[yekis]

 

i want to scale ang image ($overlay) to 178 x 160 pixels...basically this is my code

 

 

imagecopymerge($im, $overlay, 0, 0, 0, 0, 178, 160,100); 

 

the problems are

 

1) when i scale the image to 178 x 160..it crops the image..it doesn't scale it to that specific size

 

2) the image ($overlay) is placed at "0,0 xy" coordinate..how can i place it at a specific coordinate...tnx