Index: source/blender/src/buttons_shading.c
===================================================================
--- source/blender/src/buttons_shading.c	(revision 12614)
+++ source/blender/src/buttons_shading.c	(working copy)
@@ -3325,10 +3325,56 @@
 	uiBlockSetCol(block, TH_AUTO);
 }
 
+void material_tramir_ior_preset_cb(Material *ma, short int *ior_switch)
+{
+    switch(*ior_switch)
+    {
+    case 0:
+        /* ior is still the staticly declared 0 */
+        break;
+    case 1:
+        /* bubble */
+        ma->ang = 1.100;
+        *ior_switch = 0;
+        break;
+    case 2:
+        /* water */
+        ma->ang = 1.333;
+        *ior_switch = 0;
+        break;
+    case 3:
+        /* ice (from water) */
+        ma->ang = 1.310;
+        *ior_switch = 0;
+        break;
+    case 4:
+        /* light glass */
+        ma->ang = 1.450;
+        *ior_switch = 0;
+        break;
+    case 5:
+        /* standard glass */
+        ma->ang = 1.520;
+        *ior_switch = 0;
+        break;
+    case 6:
+        /* heavy glass */
+        ma->ang = 1.650;
+        *ior_switch = 0;
+        break;
+    case 7:
+        /* crystal */
+        ma->ang = 1.870;
+        *ior_switch = 0;
+        break;
+    }
+}
+
 static void material_panel_tramir(Material *ma)
 {
  	uiBlock *block;
 	short yco=PANEL_YMAX;
+	static short int ior_switch = 0;
  	
  	block= uiNewBlock(&curarea->uiblocks, "material_panel_tramir", UI_EMBOSS, UI_HELV, curarea->win);
  	uiNewPanelTabbed("Shaders", "Material");
@@ -3384,7 +3430,12 @@
 	
 	uiBlockBeginAlign(block);
 	uiDefButF(block, NUMSLI, B_MATPRV, "IOR: ",
-		X2CLM2, yco-=BUTH, BUTW2, BUTH, &(ma->ang), 1.0, 3.0, 100, 2, "Sets angular index of refraction for raytraced refraction");
+		X2CLM2, yco-=BUTH, BUTW2 - 20, BUTH, &(ma->ang), 1.0, 3.0, 100, 2, "Sets angular index of refraction for raytraced refraction");
+	/* arrow menu that holds IOR presets */
+	uiDefButS(block, MENU, B_MATPRV, "IOR presets%t| Bubble%x1| Water%x2| Ice%x3| Light Glass%x4| Standard Glass%x5| Heavy Glass%x6| Crystal%x7",
+        X2CLM2 + (BUTW2 - 20), yco, 20, BUTH, &ior_switch, 0, 0, 0, 0, "IOR presets");
+    material_tramir_ior_preset_cb(ma, &ior_switch);
+                                            
 	uiDefButF(block, NUMSLI, B_MATPRV, "Fresnel: ",
 		X2CLM2, yco-=BUTH, BUTW2, BUTH, &(ma->fresnel_tra), 0.0, 5.0, 10, 2, "Power of Fresnel for mirror reflection");
 	uiDefButF(block, NUMSLI, B_MATPRV, "Fac: ",
@@ -3434,6 +3485,7 @@
 {
 	uiBlock *block;
 	char *mstr = "Material presets %t|No Reflect/Transmit %x0|Clear Glass %x1|Color Glass %x2|Uniform Reflect %x3|Fresnel Reflect %x4";
+	static short int ior_switch = 0;
 
 	/* better to use same name as original panel */
 	block= uiNewBlock(&curarea->uiblocks, "material_panel_tramir", UI_EMBOSS, UI_HELV, curarea->win);
@@ -3454,7 +3506,11 @@
 	uiDefButF(block, NUMSLI, B_MATPRV, "frsOfs ", 160,140,150,20, &(ma->fresnel_mir_i), 1.0, 5.0, 10, 2, "Fresnel offset, 1 is uniform mirror, 5 is fresnel mirror (IOR>1)");
 
 	/* ior has extended range up to 30, for use with total fresnel reflection */
-	uiDefButF(block, NUMSLI, B_MATPRV, "IOR ", 10,115,150,20, &(ma->ang), 1.0, 30.0, 100, 2, "Sets the angular index of refraction for raytrace");
+	uiDefButF(block, NUMSLI, B_MATPRV, "IOR ", 10,115,130,20, &(ma->ang), 1.0, 30.0, 100, 2, "Sets the angular index of refraction for raytrace");
+	/* arrow menu that holds IOR presets */
+	uiDefButS(block, MENU, B_MATPRV, "IOR presets%t| Bubble%x1| Water%x2| Ice%x3| Light Glass%x4| Standard Glass%x5| Heavy Glass%x6| Crystal%x7",
+        140, 115, 20, 20, &ior_switch, 0, 0, 0, 0, "IOR presets");
+    material_tramir_ior_preset_cb(ma, &ior_switch);
 
 	// parameters only used in ray_transp mode
 	if(ma->mode & MA_RAYTRANSP) {