xbin_draw and xbin_cleanup methods will now compare the image's charheight

with the current detectec charheight and ignore any font data if they
dont' match (but still display the image data). This will sometimes result
in "garbage" on the screen, sometimes it'll look fine. Depends on how the
file was generated.

exec/load/cterm_lib.js

@@ -253,24 +253,25 @@ function xbin_draw(image, xpos, ypos, fg_color, bg_color, delay, cycle)
 			delay = 0;
 	}
 
-	if(image.font) {
+	console.clear(LIGHTGRAY|BG_BLACK);
+
+	if(image.font && image.charheight == this.charheight(console.screen_rows)) {
 		for(var i = 0; i < image.font.length; i++)	{
 	//		print("Loading font " + image.font[i].length + " bytes");
 			this.load_font(0xff - i, image.font[i], true);
 		}
-	}
-	console.clear(7);
-	for(var p in this.font_styles) {
-		var font_set = image[p];
-		if(font_set == undefined) {
-			this.activate_font(this.font_styles[p], 0);
-			continue;
-		}
-//		printf("font_set = %u\r\n", font_set);
-		if(font_set < image.font_count) {
-//			print(format("Activating font " + font_set + " for " + p));
-			if(this.activate_font(this.font_styles[p], 0xff - font_set) == false) {
-				return "activate font failed";
+		for(var p in this.font_styles) {
+			var font_set = image[p];
+			if(font_set == undefined) {
+				this.activate_font(this.font_styles[p], 0);
+				continue;
+			}
+	//		printf("font_set = %u\r\n", font_set);
+			if(font_set < image.font_count) {
+	//			print(format("Activating font " + font_set + " for " + p));
+				if(this.activate_font(this.font_styles[p], 0xff - font_set) == false) {
+					return "activate font failed";
+				}
 			}
 		}
 	}
@@ -458,10 +459,11 @@ function xbin_cleanup(image)
 	console.clear(ansiterm.LIGHTGRAY|ansiterm.BG_BLACK);
 	ansiterm.send("ext_mode", "set", "cursor");
 
-	for(var p in this.font_styles)
-		if(image==undefined || image[p] < image.font_count)
-			this.activate_font(this.font_styles[p], 0);
-
+	if(image===undefined || (image.font && image.charheight == this.charheight(console.screen_rows))) {
+		for(var p in this.font_styles)
+			if(image==undefined || image[p] < image.font_count)
+				this.activate_font(this.font_styles[p], 0);
+	}
 	if(image==undefined || image.flags&xbin.FLAG_NONHIGH)
 		ansiterm.send("ext_mode", "clear", "no_bright_intensity");
 	if(image==undefined || image.flags&xbin.FLAG_NONBLINK)