# searches tree for all materials in figure and replaces named file with new file name 
# save as material collection to save running script again
import poser
myimgname = "c:/program files/e frontier/poser7/runtime/textures/oldimgname.jpg"    # file name used
newimgname = "c:/program files/e frontier/poser7/runtime/textures/newimgname.jpg"   # new file name to be used
scn = poser.Scene()
fig = scn.CurrentFigure()
mats = fig.Materials()
for mat in mats:
	print mat.Name() 
	tree = mat.ShaderTree()
	nods = tree.Nodes()
	for nod in nods:
		if nod.Type() == poser.kNodeTypeCodeIMAGEMAP:
			img = nod.Input(0).Value()
			print img
			if img == myimgnam:
				nod.input(0).SetString(newimgname)  	
	tree.UpdatePreview
scn.DrawAll()